Displaying publications 21 - 40 of 52 in total

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  1. Jamali H, Radmehr B, Ismail S
    J Dairy Sci, 2014;97(4):2226-30.
    PMID: 24534509 DOI: 10.3168/jds.2013-7509
    The aims of this study were to determine the prevalence and antibiotic resistance of Staphylococcus aureus isolated from bovine clinical mastitis in Varamin, Tehran Province, Iran. All of the isolated Staph. aureus were identified by morphology and culture and confirmed using the API Staph identification system (bioMérieux, Marcy-l'Étoile, France). Antibiotic resistance genes were detected by PCR with oligonucleotide primers specific for each gene. Staphylococcus aureus was recovered from 43 of 207 (20.1%) bovine clinical milk samples. Using disk diffusion, methicillin-resistant Staph. aureus was detected in 5 of 43 (11.6%) samples. The pathogen showed high resistance against penicillin G (86%) and tetracycline (76.7%). The blaZ (penicillin) (86%), tetM (tetracycline), and ermC (erythromycin) genes (39.5% each) were the most prevalent antibiotic resistance genes. The findings of this study are useful for designing specific control programs for bovine clinical mastitis caused by Staph. aureus in this region of Iran.
    Matched MeSH terms: Iran/epidemiology
  2. Jamali S, Eskandari N, Aryani O, Salehpour S, Zaman T, Kamalidehghan B, et al.
    Iran Biomed J, 2014;18(2):114-9.
    PMID: 24518553
    BACKGROUND: Tay-Sachs disease (TSD), or GM2 gangliosidosis, is a lethal autosomal recessive neurodegenerative disorder, which is caused by a deficiency of beta-hexosaminidase A (HEXA), resulting in lysosomal accumulation of GM2 ganglioside. The aim of this study was to identify the TSD-causing mutations in an Iranian population.

    METHODS: In this study, we examined 31 patients for TSD-causing mutations using PCR, followed by restriction enzyme digestion.

    RESULTS: Molecular genetics analysis of DNA from 23 patients of TSD revealed mutations that has been previously reported, including four-base duplications c.1274_1277dupTATC in exon 11 and IVS2+1G>A, deletion TTAGGCAAGGGC in exon 10 as well as a few novel mutations, including C331G, which altered Gln>Glu in HEXB, A>G, T>C, and p.R510X in exon 14, which predicted a termination codon or nonsense mutation.

    CONCLUSION: In conclusion, with the discovery of these novel mutations, the genotypic spectrum of Iranian patients with TSD disease has been extended and could facilitate definition of disease-related mutations.

    Matched MeSH terms: Iran/epidemiology
  3. Mohaghegh Z, Abedi P, Dilgouni T, Namvar F, Ruzafza S
    Horm. Metab. Res., 2015 Apr;47(4):284-8.
    PMID: 25611206 DOI: 10.1055/s-0034-1395607
    The predisposing factors of preeclampsia may endanger the mother's heath as well as her neonate. One hypothesis related to preeclampsia is vitamin D deficiency or insufficiency. This study was conducted to evaluate the relationship between preeclampsia and the serum level of 25-hydroxyvitamin D (25-OH-D) in mothers and their neonates. In this case-control study, we recruited 41 preeclamptic and 50 healthy women from the Imam Khomeini Hospital in Ahvaz, Iran. Venous blood (2 ml) from mothers (in time of labor) and 2 ml of blood from the umbilical cord were taken, centrifuged, stored at -30°C and sent to a laboratory for analysis of 25-OH-D by ELISA. Vitamin D levels<20 ng/ml were regarded as deficiency, levels between 21-29 ng/ml were regarded as insufficiency, and if levels were higher than 30 ng/ml, these were considered normal. Independent t-test, chi-square, Spearman correlation coefficient and logistic regression were used to analyze data. Mean levels of 25-OH-D were significantly lower in preeclamptic women (15.2±13.6 vs. 23.3±15.3 ng/ml, p=0.001) and in their neonates (15.2±13.1 vs. 21.6±12.6 ng/ml, p=0.01) compared to normal pregnant women and their neonates. There was a significant relationship between the levels of vitamin D in preeclamptic women with levels of this vitamin in their neonates (r=0.901, p=0.0001). 25-OH-D deficiency that exist in preeclamptic mothers, may be a health risk for their infants, therefore, early use of vitamin D supplement with higher dose than 400 IU in Iranian women is recommended.
    Matched MeSH terms: Iran/epidemiology
  4. Jalali-Farahani S, Chin YS, Mohd Nasir MT, Amiri P
    Child Psychiatry Hum Dev, 2015 Jun;46(3):485-92.
    PMID: 25173517 DOI: 10.1007/s10578-014-0489-8
    This study aimed to determine the association between disordered eating and overweight and also health-related quality of life (HRQOL) among adolescents in high schools of Tehran. The participants were 465 adolescents, aged 14-17 years. After anthropometric measurements, body mass index-for-age and body weight status were determined using World Health Organization cut offs. The Eating Attitudes Test-26 (EAT-26) and Pediatric Quality of Life Inventory (PedsQL™4.0) were used to assess disordered eating and HRQOL, respectively. Disordered eating was prevalent in 18.9% of adolescents, with higher prevalence in girls (26.4%) compared to boys (11.8%; χ(2):16.29, p < 0.05). Disordered eating was associated with overweight in girls (χ(2) = 11.07, p < 0.05), but not in boys (χ(2) = 2.01, p = 0.16). Disordered eating was associated with poor HRQOL especially in psychosocial domains of HRQOL. Considering the high prevalence of disordered eating and its association with overweight and poor HRQOL, preventive interventions targeting adolescents are recommended.
    Matched MeSH terms: Iran/epidemiology
  5. Hamid TA, Pakgohar M, Ibrahim R, Dastjerdi MV
    Arch Gerontol Geriatr, 2015 May-Jun;60(3):514-21.
    PMID: 25662038 DOI: 10.1016/j.archger.2015.01.003
    UI is a worldwide chronic condition among postmenopausal women. Little is known about the meaning of lived experiences of urinary incontinence of these women's viewpoints in their context.
    Matched MeSH terms: Iran/epidemiology
  6. Bagheri A, Kamalidehghan B, Haghshenas M, Azadfar P, Akbari L, Sangtarash MH, et al.
    Drug Des Devel Ther, 2015;9:2627-34.
    PMID: 25999696 DOI: 10.2147/DDDT.S79709
    The presence of polymorphisms in the CYP2D6 gene may modulate enzyme level and activity, thereby affecting individual responses to pharmacological treatment. Here, we compared the prevalence of the CYP2D6*10, *4, and 14* alleles in an Iranian population of different ethnicities with those of other populations. Allele and genotype frequency distributions of CYP2D6*10 variants and predicted phenotypes including extensive metabolizers, intermediate metabolizers, and poor metabolizers were analysed in blood samples of 300 unrelated healthy individuals in an Iranian population using polymerase chain reaction (PCR)-restriction fragment length polymorphism, PCR-single-strand conformation polymorphism, and direct genomic DNA sequencing. The CYP2D6*4 (G1846A) and *14 (G1758A) allelic frequencies were not detected in different ethnicities, demonstrating the absence of a significant contribution of these alleles in Iranian populations. However, the T/T, C/T, and C/C genotype frequencies of the CYP2D6*10 allele were significantly different (P<0.01) in all Iranian ethnic groups. Additionally, the frequency of the homozygous T/T variant of the CYP2D6*10 allele was significantly high in the Lure (P<0.017) and low in the Kurd (P<0.002) ethnicities. The frequency of the T/T variant of the CYP2D6*10 allele in central Iran was the highest (P<0.001), while the south of Iran had the lowest frequency (P<0.001). The frequency of the C/T variant of the CYP2D6*10 allele was significantly a bit high (P<0.001) in females compare to males, while the frequencies of the T/T variant in females is similar to males, which are 24.4% and 24.3%, respectively. In contrast to absence of the CYP2D6*4 (G1846A) and *14 (G1758A) alleles in Iranian populations of different ethnicities, the prediction of the CYP2D6*10 allele is required in drug research and routine treatment, where the information would be helpful for clinicians to optimize therapy or identify persons at risk of adverse drug reactions before clinical trials. Approximately 39.3% of subjects (24.3% homozygous T/T CYP2D6*10 as poor metabolizers and 15% heterozygous C/T CYP2D6*10 as intermediate metabolizers) had this allele; therefore, the harmful effects of drugs are relatively common among Iranians.
    Matched MeSH terms: Iran/epidemiology
  7. Abdollahi A, Abu Talib M
    Death Stud, 2015;39(10):579-83.
    PMID: 25924082 DOI: 10.1080/07481187.2015.1013163
    To examine the moderating role of spirituality between hopelessness, spirituality, and suicidal ideation, 202 Iranian depressed adolescent inpatients completed measures of patient health, suicidal ideation, hopelessness, and core spiritual experience. Structural equation modelling indicated that depressed inpatients high in hopelessness, but also high in spirituality, had less suicidal ideation than others. These findings reinforce the importance of spirituality as a protective factor against hopelessness and suicidal ideation.
    Matched MeSH terms: Iran/epidemiology
  8. Rafiey H, Momtaz YA, Alipour F, Khankeh H, Ahmadi S, Sabzi Khoshnami M, et al.
    Clin Interv Aging, 2016;11:1791-1795.
    PMID: 27994445
    BACKGROUND: Despite the growing interest in the study of disasters, there is limited research addressing the elderly population that lead to prejudiced beliefs that older adults are more vulnerable to disasters than younger adults. This study aimed to compare positive mental health between elderly and young earthquake survivors.

    METHOD: Data for this study, consisting of 324 earthquake survivors, were obtained from a population-based cross-sectional survey conducted in Iran, 2015. The long-term effect of earthquake was assessed using the Mental Health Continuum-Short Form questionnaire. A one-way multivariate analysis of covariance (MANCOVA) using SPSS (version 22) was used in data analysis.

    RESULTS: Older adults scored significantly a higher level of overall positive mental health (mean [M]=34.31, standard deviation [SD]=10.52) than younger age group (M=27.48, SD=10.56, t=-4.41; P<0.001). Results of MANCOVA revealed a statistically significant difference between older and young adults on the combined positive mental health subscales (F(3,317)=6.95; P<0.001), after controlling for marital status, sex, and employment status.

    CONCLUSION: The present findings showing a higher level of positive mental health among elderly earthquake survivors compared with their younger counterparts in the wake of natural disasters suggest that advancing age per se does not contribute to increasing vulnerability.

    Matched MeSH terms: Iran/epidemiology
  9. Abbasi S, Rasouli M
    Mol Med Rep, 2017 Jun;15(6):3983-3988.
    PMID: 28440412 DOI: 10.3892/mmr.2017.6489
    Fanconi Anemia (FA) is an autosomal recessive syndrome characterized by congenital abnormalities, progressive bone marrow failure and Fanconi anemia complementation group A (FANCA) is also a potential breast and ovarian cancer susceptibility gene. A novel allele with tandem duplication of 13 base pair sequence in promoter region was identified. To investigate whether the 13 base pair sequence of tandem duplication in promoter region of the FANCA gene is of high penetrance in patients with breast cancer and to determine if the presence of the duplicated allele was associated with an altered risk of breast cancer, the present study screened DNA in blood samples from 304 breast cancer patients and 295 normal individuals as controls. The duplication allele had a frequency of 35.4 and 21.2% in patients with breast cancer and normal controls, respectively. There was a significant increase in the frequency of the duplication allele in patients with familial breast cancer compared with controls (45.1%, P=0.001). Furthermore, the estimated risk of breast cancer in individuals with a homozygote [odds ratio (OR), 4.093; 95% confidence intervals (CI), 1.957‑8.561] or heterozygote duplicated genotype (OR, 3.315; 95% CI, 1.996‑5.506) was higher compared with the corresponding normal homozygote genotype. In conclusion, the present study indicated that the higher the frequency of the duplicated allele, the higher the risk of breast cancer. To the best of our knowledge, the present study is the first to report FANCA gene duplication in patients with breast cancer.
    Matched MeSH terms: Iran/epidemiology
  10. Pirbalouti MG, Shariat A, Sangelaji B, Taghavi M, Kamaliyeh NG
    Work, 2017;58(4):519-525.
    PMID: 29254133 DOI: 10.3233/WOR-172648
    BACKGROUND: Working in a closed environment for more than 7-8 hours can affect both psychological and physical health among kindergarten workers.
    OBJECTIVE: To determine the prevalence of musculoskeletal disorders (MSD) and depression as well as the correlation between them, if any, among kindergarten workers.
    METHODS: In a cross-sectional observation, one hundred and five healthy female staff members (age: 34.27±7.01 year, working duration: 7.42±0.81 hr/d, BMI: 24.50±2.61 kg/m2 (mean±SD)), who have had at least one year of working experience, were selected randomly from 10 kindergartens. The subjects completed both the Cornell musculoskeletal and Patient Health (PHQ-9) questionnaires to enable the assessments of MSD and depression scores accordingly. The correlation between both questionnaires was then measured to find any links. To assess the reliability of Farsi-language versions of the Cornell questionnaire and PHQ-9, the Inter-class Correlation Co-efficient (ICC) was measured through test-retest with 1-week delay and the prevalence of MSD and depression were subsequently assessed as well.
    RESULTS: The Inter-class Correlation Co-efficient (ICC) illustrated that the Farsi version of MSD instruments showed high levels of repeatability. The ICC coefficient was (0.932-0.987, p 
    Matched MeSH terms: Iran/epidemiology
  11. Mohammadi F, Momtaz YA, Motalebi SA, Boosepasi S
    Rev Recent Clin Trials, 2017;12(3):182-186.
    PMID: 28530532 DOI: 10.2174/1574887112666170522142315
    BACKGROUND: There are limited scientific investigations on cognitive remediation in elderly patients with schizophrenia. The present study was aimed to examine the efficacy of cognitive remediation therapy on social skills in institutionalized elderly patients with schizophrenia.

    METHODS: The study employed a randomized clinical trial. A total of 60 institutionalized elderly patients with schizophrenia from Razi Psychiatric Hospital, Tehran were selected and randomly allocated into two equal groups (control and intervention). The intervention group attended to cognitive remediation therapy for 8 weeks. The Evaluation of Living Skills Scale for psychiatric patients was used for data collection. The Chi Square, independent and paired t-tests using SPSS, version 22, were employed to analyze the data.

    RESULTS: The mean age of 60 elderly patients participated in the study was 65.25 ± 4.19 years. No significant differences were found between two groups at baseline. However, independent t-tests showed significant differences between the intervention and the control group in social skills after implementation of intervention. Additionally, the results of paired t-tests revealed significant improvements in intervention group on communication skills (t=5.50, p<0.001), behavioral problems with others (t=5.44, p<0.001), and self-care (t=4.70, p<0.001). No significant differences were observed from pretest to post test in control group.

    CONCLUSION: The results of the present study may support the efficacy of cognitive remediation therapy on social skills of elderly patients with schizophrenia.
    Matched MeSH terms: Iran/epidemiology
  12. Mehrabadi MHF, Bahonar A, Mirzaei K, Molouki A, Ghalyanchilangeroudi A, Ghafouri SA, et al.
    Trop Anim Health Prod, 2018 Mar;50(3):677-682.
    PMID: 29027604 DOI: 10.1007/s11250-017-1438-x
    Avian influenza virus (AIV) H9N2 subtype is endemic in Iran and causes substantial economic loss to the growing poultry industry within the country. In this study, a cross-sectional analysis was carried out to determine the sero-prevalence of H9N2 in several commercial farms between the years 2014 and 2015. The comparison of the mean of serum titers and the ratio of sero-positive birds between all units were analyzed using one-way ANOVA test. In 2014, a total of 77 farms (58 turkey farms, 14 quail farms, and 5 partridge farms) and 894 birds (682 turkeys, 154 quails, and 58 partridges) were sampled while in 2015, a total of 69 farms (54 turkey farms, 8 quail farms, and 7 partridge farms) and 856 birds (675 turkeys, 105 quails, and 76 partridges) were sampled. Of that, 52 of 77 sampled farms (67.5%) and 437 of 894 samples (48.9%) were positive for H9N2 in 2014 while. Forty-one of 69 farms (59.4%) and 307 of 856 sera (35.9%) were positive in 2015. Furthermore, the mean titer of partridge farms was significantly lower than that of turkey farms (p  0.05). Our results indicated that H9N2 is circulating in these farms. Since many more such farms are being established for operations, in addition to the threat of emergence and continuous reemergence of the disease in these farms, enhanced veterinary biosecurity measures on farms are required for mitigation.
    Matched MeSH terms: Iran/epidemiology
  13. Abbasi S, Rasouli M
    PMID: 29353131 DOI: 10.1016/j.ejogrb.2017.10.020
    OBJECTIVES: Fingerprints have so far been used for determining the basis of certain malignant diseases, with positive outcomes. Considering the high rates of cancer-related mortality in Iran, this study was conducted for the purpose of examining the dermatoglyphic pattern of fingers in patients with gynecological cancers as compared to healthy people.

    STUDY DESIGN: The present study was conducted on 151 women with gynecological cancers as the case group and 152 healthy women with no history of such cancers as control group. The dematographic details of participants from both control and case groups were collected using a checklist, and the pattern of their fingerprints was prepared and examined. The data were analyzed for their significance using chi-square test and t- test. Odds ratio with 95% confidence intervals were calculated.

    RESULTS: Dermatoglyphic analysis showed that arch and loop patterns significantly changed in cases group as compared to control. However, the odds ratio suggested that loop pattern in 6 or more fingers might be a risk factor for developing gynecological cancers.

    CONCLUSION: Our results showed that there is an association between fingerprint patterns and gynecological cancers and so, dermatoglyphic analysis may aid in the early diagnosis of these cancers.

    Matched MeSH terms: Iran/epidemiology
  14. Saboor M, Kamrani AA, Momtaz YA, Sahaf R
    Med Glas (Zenica), 2019 Feb 01;16(1):121-127.
    PMID: 30680986 DOI: 10.17392/989-19
    Aim Potentially inappropriate medications (PIMs) in older people are associated with the increased use of health care services. The aim of this study was to investigate the prevalence of PIMs among the elderly being referred to pharmacies in Tehran using the Beers criteria of 2012, and identify factors related to PIMs. Methods This cross-sectional study was conducted on elderly patients (60 years and above) referred to pharmacies in Tehran, in 2017. The Beers' criteria 2012 were used to evaluate PIMs. The logistic regression analysis was used to find sociodemographic predictors of PIMs. Results The mean age of 1591 patients was 70.51 years. The overall prevalence of PIMs was 26.0%. The most frequent PIMs, in order of frequency, included diclofenac (13.5%), alprazolam (9.3%), and chlordiazepoxide (9.1%) and clonazepam (8.4%). The pain medications were found to be most common PIMs (37.6%). Polypharmacy (OR=3.64, CI 95%: .81-4.70; p<0.001), number of chronic disease (OR=2.371, CI 95%:1.71-3.28; p<0.001) insomnia (OR=1.45, CI 95%: 1.13-1.87; p<0.01) and type of specialists were found as PIMs risk factors. Internal medicine specialists prescribed PIMs significantly fewer times than other specialists(OR=0.59, CI 95%: 0.40-0.88; p<0.01, and the orthopedic specialists prescribed PIMs significantly more times than other physicians (OR=3.23, CI 95%: 5.76-1.81; p<0.001). Conclusion High prevalence of PIMs among Iranian elderly patients implies a need for the development and operationalization of scientific guidelines for the use of medicines. It is also necessary to hold training courses for physicians to be educated in such cases.
    Matched MeSH terms: Iran/epidemiology
  15. Molouki A, Mehrabadi MHF, Bashashati M, Akhijahani MM, Lim SHE, Hajloo SA
    Trop Anim Health Prod, 2019 Jun;51(5):1247-1252.
    PMID: 30689157 DOI: 10.1007/s11250-019-01817-1
    BACKGROUND: Based on our previous work, it was discovered that some Newcastle disease virus (NDV) isolates from backyard poultry between 2011 and 2013 in Iran formed a new separate cluster when phylogenetic analysis based on the complete F gene sequence was carried out. The novel cluster was designated subgenotype VII(L) and published.

    AIM: In the current study, for further validation, we initiated a comprehensive epidemiological study to identify the dominant NDV genotype(s) circulating within the country. Collection of samples was executed between October 2017 and February 2018 from 108 commercial broiler farms which reported clinical signs of respiratory disease in their broilers.

    RESULT: We report that 38 of the farms (> 35%) tested positive for NDV. The complete F gene sequences of seven of the isolates are shown as representative sequences in this study. According to the phylogenetic tree constructed, the recent broiler farm isolates clustered into the newly designated cluster VII(L) together with the older Iranian backyard poultry isolates in our previous work. All the sequences shared the same virulence-associated F cleavage site of 112RRQKR↓F117.

    CONCLUSION: Our phylogenetic analysis suggested that the NDV subgenotype VII(L) may have been derived from subgenotype VIId, and contrary to popular belief, subgenotype VIId may not be the dominant subgenotype in Iran. Tracking of the subgenotype on BLAST suggested that the NDV subgenotype VII(L), although previously unidentified, may have been circulating in this region as an endemic virus for at least a decade. Other NDV genotypes, however, have also been reported in Iran in recent years. Hence, ongoing study is aimed at determining the exact dominant NDV genotypes and subgenotypes in the country. This will be crucial in effective mitigation of outbreaks in Iranian broiler farms.

    Matched MeSH terms: Iran/epidemiology
  16. Sharif Nia H, Rezapour M, Allen KA, Pahlevan Sharif S, Jafari A, Torkmandi H, et al.
    Asian Pac J Cancer Prev, 2019 09 01;20(9):2803-2809.
    PMID: 31554380 DOI: 10.31557/APJCP.2019.20.9.2803
    Objectives: The Center for Epidemiologic Studies Depression Scale (CES-D) was specifically created to assess
    depression in cancer patients. However, to date, the CES-D has not been validated in Farsi. Therefore, this study aimed to
    assess the psychometric properties of the CES-D in Iranian cancer patients. Methods: During a three-month period
    (October to December, 2015), a total of 380 cancer patients completed a Farsi version of the CES-D. The construct
    validity of the scale was evaluated by exploratory factor analysis. Reliability was assessed using Cronbach’s alpha
    and McDonald Omega. All of the statistical procedure were run by SPSS 22 (SPSS Inc., Chicago, IL, USA). Results:
    The construct validity of the CES-D determined three factors (somatic affect, negative affect, and positive affect),
    which explained 65.60% of the total variance. The internal consistency was greater than 0.70. Conclusion: Findings
    revealed that the Farsi version of the CES-D has acceptable validity and reliability, which can be used to measure
    depression in Iranian cancer patients.
    Matched MeSH terms: Iran/epidemiology
  17. Jobson L, Mirabolfathi V, Moshirpanahi S, Parhoon H, Gillard J, Mukhtar F, et al.
    Sci Rep, 2019 12 04;9(1):18344.
    PMID: 31797979 DOI: 10.1038/s41598-019-54775-x
    This study investigated the influence of culture and depression on (1) emotion priming reactions, (2) the recall of subjective experience of emotion, and (3) emotion meaning. Members of individualistic culture (Australia, n = 42) and collectivistic culture (Iran, n = 32, Malaysia, n = 74) with and without depression completed a biological motion task, subjective experience questionnaire and emotion meaning questionnaire. Those with depression, regardless of cultural group, provided significantly fewer correct responses on the biological motion task than the control group. Second, the collectivistic control groups reported greater social engaging emotion than the Australian control group. However, the three depressed groups did not differ culturally. The Australian depressed group reported significantly greater interpersonally engaging emotion than the Australian control group. Third, the collectivistic groups reported significantly greater social worth, belief changes and sharing of emotion than the individualistic group. Depression did not influence these cultural effects. Instead we found that those with depression, when compared to controls, considered emotions as subjective phenomena, that were qualifying for relationships with others, and associated with greater agency appraisals. The applicability of the biocultural framework of emotion in depression was considered.
    Matched MeSH terms: Iran/epidemiology
  18. Xi B, Zong X, Kelishadi R, Litwin M, Hong YM, Poh BK, et al.
    J Clin Endocrinol Metab, 2020 04 01;105(4).
    PMID: 31723976 DOI: 10.1210/clinem/dgz195
    CONTEXT: No universal waist circumference (WC) percentile cutoffs used have been proposed for screening central obesity in children and adolescents.

    OBJECTIVE: To develop international WC percentile cutoffs for children and adolescents with normal weight based on data from 8 countries in different global regions and to examine the relation with cardiovascular risk.

    DESIGN AND SETTING: We used pooled data on WC in 113,453 children and adolescents (males 50.2%) aged 4 to 20 years from 8 countries in different regions (Bulgaria, China, Iran, Korea, Malaysia, Poland, Seychelles, and Switzerland). We calculated WC percentile cutoffs in samples including or excluding children with obesity, overweight, or underweight. WC percentiles were generated using the general additive model for location, scale, and shape (GAMLSS). We also estimated the predictive power of the WC 90th percentile cutoffs to predict cardiovascular risk using receiver operator characteristics curve analysis based on data from 3 countries that had available data (China, Iran, and Korea). We also examined which WC percentiles linked with WC cutoffs for central obesity in adults (at age of 18 years).

    MAIN OUTCOME MEASURE: WC measured based on recommendation by the World Health Organization.

    RESULTS: We validated the performance of the age- and sex-specific 90th percentile WC cutoffs calculated in children and adolescents (6-18 years of age) with normal weight (excluding youth with obesity, overweight, or underweight) by linking the percentile with cardiovascular risk (area under the curve [AUC]: 0.69 for boys; 0.63 for girls). In addition, WC percentile among normal weight children linked relatively well with established WC cutoffs for central obesity in adults (eg, AUC in US adolescents: 0.71 for boys; 0.68 for girls).

    CONCLUSION: The international WC cutoffs developed in this study could be useful to screen central obesity in children and adolescents aged 6 to 18 years and allow direct comparison of WC distributions between populations and over time.

    Matched MeSH terms: Iran/epidemiology
  19. Salarzadeh Jenatabadi H, Bt Wan Mohamed Radzi CWJ, Samsudin N
    PMID: 32708480 DOI: 10.3390/ijerph17145201
    As postpartum obesity is becoming a global public health challenge, there is a need to apply postpartum obesity modeling to determine the indicators of postpartum obesity using an appropriate statistical technique. This research comprised two phases, namely: (i) development of a previously created postpartum obesity modeling; (ii) construction of a statistical comparison model and introduction of a better estimator for the research framework. The research model displayed the associations and interactions between the variables that were analyzed using the Structural Equation Modeling (SEM) method to determine the body mass index (BMI) levels related to postpartum obesity. The most significant correlations obtained were between BMI and other substantial variables in the SEM analysis. The research framework included two categories of data related to postpartum women: living in urban and rural areas in Iran. The SEM output with the Bayesian estimator was 81.1%, with variations in the postpartum women's BMI, which is related to their demographics, lifestyle, food intake, and mental health. Meanwhile, the variation based on SEM with partial least squares estimator was equal to 70.2%, and SEM with a maximum likelihood estimator was equal to 76.8%. On the other hand, the output of the root mean square error (RMSE), mean absolute error (MSE) and mean absolute percentage error (MPE) for the Bayesian estimator is lower than the maximum likelihood and partial least square estimators. Thus, the predicted values of the SEM with Bayesian estimator are closer to the observed value compared to maximum likelihood and partial least square. In conclusion, the higher values of R-square and lower values of MPE, RMSE, and MSE will produce better goodness of fit for SEM with Bayesian estimators.
    Matched MeSH terms: Iran/epidemiology
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