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Child marriage and its association with adverse reproductive outcomes for women in Bangladesh

Kamal SM, Hassan CH

Asia Pac J Public Health, 2015 Mar;27(2):NP1492-506.
PMID: 24097938 DOI: 10.1177/1010539513503868

This study examines the prevalence of child marriage and its effect on reproductive outcomes among women in Bangladesh using the most recent 2011 Bangladesh Demographic and Health Survey data. Both bivariate and multivariate statistical techniques used in the study yielded quantitatively important and reliable estimates of child marriage and its impact on adverse reproductive and health outcomes. Overall, 77% of the marriages among women aged 20 to 49 years old took place before the age of 18 years. Women's education is the most single significant determinant of child marriage. Findings revealed that after being adjusted for sociodemographic factors, child marriage significantly (P < .001) increases the likelihood of stillbirth/miscarriage (odds ratio [OR] = 1.80; 95% confidence interval [CI] = 1.45-2.24) and pregnancy termination (OR = 1.24; 95% CI = 1.12-1.38). Programs should aim to retain girls in school for longer periods not only to raise the age at first marriage but also for sound reproductive health and overall social development of Bangladesh.
Fulltext Socioeconomic Correlates of Contraceptive Use among the Ethnic Tribal Women of Bangladesh: Does Sex Preference Matter?

Kamal SM, Hassan CH

J Family Reprod Health, 2013 Jun;7(2):73-86.
PMID: 24971107

Objective: To examine the relationship between socioeconomic factors affecting contraceptive use among tribal women of Bangladesh with focusing on son preference over daughter.
Materials and methods: The study used data gathered through a cross sectional survey on four tribal communities resided in the Rangamati Hill District of the Chittagong Hill Tracts, Bangladesh. A multistage random sampling procedure was applied to collect data from 865 currently married women of whom 806 women were currently married, non-pregnant and had at least one living child, which are the basis of this study. The information was recorded in a pre-structured questionnaire. Simple cross tabulation, chi-square tests and logistic regression analyses were performed to analyzing data.
Results: The contraceptive prevalence rate among the study tribal women was 73%. The multivariate analyses yielded quantitatively important and reliable estimates of likelihood of contraceptive use. Findings revealed that after controlling for other variables, the likelihood of contraceptive use was found not to be significant among women with at least one son than those who had only daughters, indicating no preference of son over daughter. Multivariate logistic regression analysis suggests that home visitations by family planning workers, tribal identity, place of residence, husband's education, and type of family, television ownership, electricity connection in the household and number of times married are important determinants of any contraceptive method use among the tribal women.
Conclusion. The contraceptive use rate among the disadvantaged tribal women was more than that of the national level. Door-step delivery services of modern methods should be reached and available targeting the poor and remote zones.
Keywords: Bangladesh, Contraceptive use, Ethnic tribal women, Sex preference, Logistic regression
Information-based decoding of the coupling among human brain activity and movement paths

Kamal SM, Dawi NM, Namazi H

Technol Health Care, 2021;29(6):1109-1118.
PMID: 33749623 DOI: 10.3233/THC-202744

BACKGROUND: Walking like many other actions of a human is controlled by the brain through the nervous system. In fact, if a problem occurs in our brain, we cannot walk correctly. Therefore, the analysis of the coupling of brain activity and walking is very important especially in rehabilitation science. The complexity of movement paths is one of the factors that affect human walking. For instance, if we walk on a path that is more complex, our brain activity increases to adjust our movements.
OBJECTIVE: This study for the first time analyzed the coupling of walking paths and brain reaction from the information point of view.
METHODS: We analyzed the Shannon entropy for electroencephalography (EEG) signals versus the walking paths in order to relate their information contents.
RESULTS: According to the results, walking on a path that contains more information causes more information in EEG signals. A strong correlation (p= 0.9999) was observed between the information contents of EEG signals and walking paths. Our method of analysis can also be used to investigate the relation among other physiological signals of a human and walking paths, which has great benefits in rehabilitation science.
Child marriage in Bangladesh: trends and determinants

Kamal SM, Hassan CH, Alam GM, Ying Y

J Biosoc Sci, 2015 Jan;47(1):120-39.
PMID: 24480489 DOI: 10.1017/S0021932013000746

This study examines the trends and determinants of child marriage among women aged 20-49 in Bangladesh. Data were extracted from the last six nationally representative Demographic and Health Surveys conducted during 1993-2011. Simple cross-tabulation and multivariate binary logistic regression analyses were adopted. According to the survey conducted in 2011, more than 75% of marriages can be categorized as child marriages. This is a decline of 10 percentage points in the prevalence of child marriage compared with the survey conducted in 1993-1994. Despite some improvements in education and other socioeconomic indicators, Bangladeshi society still faces the relentless practice of early marriage. The mean age at first marriage has increased by only 1.4 years over the last one and half decades, from 14.3 years in 1993-1994 to 15.7 years in 2011. Although the situation on risk of child marriage has improved over time, the pace is sluggish. Both the year-of-birth and year-of-marriage cohorts of women suggest that the likelihood of marrying as a child has decreased significantly in recent years. The risk of child marriage was significantly higher when husbands had no formal education or little education, and when the wives were unemployed or unskilled workers. Muslim women living in rural areas have a greater risk of child marriage. Women's education level was the single most significant negative determinant of child marriage. Thus, the variables identified as important determinants of child marriage are: education of women and their husbands, and women's occupation, place of residence and religion. Programmes to help and motivate girls to stay in school will not only reduce early marriage but will also support overall societal development. The rigid enforcement of the legal minimum age at first marriage could be critical in decreasing child marriage.
Safer sex negotiation and its association with condom use among clients of female sex workers in Bangladesh

Kamal SM, Hassan CH, Salikon RH

Asia Pac J Public Health, 2015 Mar;27(2):NP2410-22.
PMID: 24345848 DOI: 10.1177/1010539513510554

This study examines safer sex negotiation and its association with condom use among clients of female sex workers (FSWs) in Bangladesh. Data were collected from 484 FSWs living in Dhaka city following a convenient sampling procedure. Overall, 47% of the clients were suggested to use condom during last sexual intercourse and 21% did so. Both bivariate and multivariable binary logistic regression analyses yielded significantly increased risk of negotiation for safer sex with clients among FSWs with higher education. The power bargaining significantly (P < .001) increased the risk of condom use by 2.15 times (95% confidence interval = 1.28-3.59). The odds of condom use were significantly higher among the FSWs with higher education, unmarried, hotel-based, and among those with higher level of HIV/AIDS-related knowledge. The Bangladeshi FSWs have little control over their profession. HIV prevention programs should aim to encourage FSWs through information, education, and communication program to insist on condom use among clients.
Fulltext Tobacco smoking and its association with illicit drug use among young men aged 15-24 years living in urban slums of Bangladesh

Kabir MA, Goh KL, Kamal SM, Khan MM

PLoS One, 2013;8(7):e68728.
PMID: 23935885 DOI: 10.1371/journal.pone.0068728

Tobacco smoking (TS) and illicit drug use (IDU) are of public health concerns especially in developing countries, including Bangladesh. This paper aims to (i) identify the determinants of TS and IDU, and (ii) examine the association of TS with IDU among young slum dwellers in Bangladesh.
Factors associated with the timing of antenatal care seeking in Bangladesh

Kamal SM, Hassan CH, Islam MN

Asia Pac J Public Health, 2015 Mar;27(2):NP1467-80.
PMID: 24097925 DOI: 10.1177/1010539513485786

This study investigates the factors affecting the timing of antenatal care (ANC) seeking among Bangladeshi women using the 2007 Bangladesh Demographic and Health Survey data. Overall, 52% of the most recently pregnant women sought skilled ANC. The most pronounced reason for not receiving the services was that it was "not needed." Of the women who sought ANC, 57% entered for ANC at the fourth month or later. The multivariate regression analysis revealed that maternal age, women's education, residence, wealth index, pregnancy intention status, child's birth order, and wanting more children were the important determinants of ANC services utilization. Wanting more children and contraception use were no longer independent contributors to late ANC entry. These barriers should also be addressed as part of health interventions through information education and communication programs to early entry to ANC. The need to reduce financial barriers to care is a major implication of this study.
Determinants of institutional delivery among women in Bangladesh

Kamal SM, Hassan CH, Alam GM

Asia Pac J Public Health, 2015 Mar;27(2):NP1372-88.
PMID: 23666835 DOI: 10.1177/1010539513486178

This study examines the factors that influence institutional delivery among women in Bangladesh extracting data from 2007 Bangladesh Demographic and Health Survey. We employed both bivariate and multivariate statistical analyses in this study. Findings revealed that, only 14.7% of the women went for institutional delivery and 28.8% births were delivered by trained birth attendance. The multivariate logistic regression analysis yielded quantitatively important and reliable estimates of facility delivery. The likelihood of institutional delivery was significantly higher for first-order pregnancy, couples' higher education, the richest, higher autonomy, TV ownership, non-Muslims, who received antenatal care services, pregnancy complications, and urban residents. Government should ensure quality of care, easy accessibility, and availability of all facilities free of cost in the public medical institutions. Women should be informed regarding the long-term benefit of institutional delivery through information, education, and communication program.
Inequality of the use of skilled birth assistance among rural women in Bangladesh: facts and factors

Kamal SM, Hassan CH, Kabir MA

Asia Pac J Public Health, 2015 Mar;27(2):NP1321-32.
PMID: 23572376 DOI: 10.1177/1010539513483823

This study examines the inequality of the use of skilled delivery assistance by the rural women of Bangladesh using the 2007 Bangladesh Demographic and Health Survey data. Simple cross-tabulation and univariate and multivariate statistical analyses were employed in the study. Overall, 56.1% of the women received at least one antenatal care visit, whereas only 13.2% births were assisted by skilled personnel. Findings revealed apparent inequality in using skilled delivery assistance by socioeconomic strata. Birth order, women's education, religion, wealth index, region and antenatal care are important determinants of seeking skilled assistance. To ensure safe motherhood initiative, government should pay special attention to reduce inequality in seeking skilled delivery assistance. A strong focus on community-based and regional interventions is important in order to increase the utilization of safe maternal health care services in rural Bangladesh.
Sero-prevalence of toxoplasmosis among pregnant women attending an ante-natal clinic at a teaching hospital in Al Kharj, Saudi Arabia

Qamer S, Rizvi SSR, Raoof S, Kamal SM, Khan S

Trop Biomed, 2020 Mar 01;37(1):186-193.
PMID: 33612729

Toxoplasma gondii (T. gondii) is a zoonotic infection that may be transmitted to human beings either by consumption of raw or uncooked meat or by ingesting oocysts. Toxoplasma organisms can cross blood placenta barrier and may result in congenital toxoplasmosis. About 80% of immunocompetent individuals do not show any clinical manifestations and are silent carriers of this disease. Pregnant women especially in highly prevalent areas are recommended to be screened for this disease in order to prevent the potential vertical transmission. To our knowledge no such study has been conducted in this region of Saudi Arabia. This study attempted to carry out two objectives: first, to find out the seroprevalence of T. gondii infection in pregnant women attending prenatal care services in our hospital; second, to find out risk factors associated with T. gondii seroprevalence in our patients. It was carried out in Teaching Hospital in Al-Kharj over a period of one year. All 306 pregnant women attending antenatal clinic were involved in the study. A pretested selfexplanatory questionnaire was filled out by the patients and their sera were collected to be tested for IgG and/or IgM against T. gondii. The results were then statistically analyzed using SPSS software and p-value was calculated using Pearson Chi Square test. Out of the 306 blood samples tested, 99 (32.4%) were seropositive for specific anti T. gondii IgG antibodies and 3(1%) were seropositive for IgM. This show that seroprevalence of T. gondii antibodies was high among pregnant women and the prevalence showed a significant association with age. The study recommends conducting educational programs to raise awareness among women about risk factors and precautions to be taken.
Decoding the correlation between heart activation and walking path by information-based analysis

Kamal SM, Babini MH, Tee R, Krejcar O, Namazi H

Technol Health Care, 2023;31(1):205-215.
PMID: 35848002 DOI: 10.3233/THC-220191

BACKGROND: One of the important areas of heart research is to analyze heart rate variability during (HRV) walking.
OBJECTIVE: In this research, we investigated the correction between heart activation and the variations of walking paths.
METHOD: We employed Shannon entropy to analyze how the information content of walking paths affects the information content of HRV. Eight healthy students walked on three designed walking paths with different information contents while we recorded their ECG signals. We computed and analyzed the Shannon entropy of the R-R interval time series (as an indicator of HRV) versus the Shannon entropy of different walking paths and accordingly evaluated their relation.
RESULTS: According to the obtained results, walking on the path that contains more information leads to less information in the R-R time series.
CONCLUSION: The analysis method employed in this research can be extended to analyze the relation between other physiological signals (such as brain or muscle reactions) and the walking path.
Dual burden of underweight and overweight among women in Bangladesh: patterns, prevalence, and sociodemographic correlates

Kamal SM, Hassan CH, Alam GM

J Health Popul Nutr, 2015 Mar;33(1):92-105.
PMID: 25995726

The discourse of dual burden caused through underweight and overweight is well-documented globally but this issue and its connection with women's health in Bangladesh is yet to be explored widely. To enrich the current debate, this study, in the context of Bangladesh, examines the patterns, prevalence, and socioeconomic factors influencing the ever-married women of being underweight and overweight over normal weight. Data used in this study have been extracted from the most recent 2011 Bangladesh Demographic and Health Survey. To achieve results connected with the research objectives, both bivariate and multivariate statistical analyses have been employed. In bivariate analysis, we used seven categories of BMI cutoff points for Asian countries as prescribed by World Health Organization (WHO). Multinomial logistic regression model was constructed to investigate the net effect of socioeconomic factors on underweight, pre-overweight, and overweight over normal weight. The results confirm the co-existence of underweight and overweight among women as we found the prevalence of underweight, normal weight, pre-overweight, overweight, and obesity to be 24.1%, 46.7%, 12.8%, 13.5%, and 2.9% respectively. Compared to the richest, the women from the poorest households were significantly (p<0.001) most likely to be underweight (OR=2.75, 95% CI 2.27-3.35) and least likely to be overweight (OR=0.15, 95% CI 0.12-0.19) over normal weight. The urban women, compared to their rural counterparts, were significantly (p<0.001) less likely to be underweight (OR=0.80, 95% CI 0.71-0.91) and more likely to be overweight (OR=1.33, 95% CI 1.18-1.51) than normal weight. The other socioeconomic grades that were most marked to be underweight and overweight are age, women's education, marital status, age at first childbirth, parity, number of children aged ≤ 5 years at the household, and food security. The findings confirm the dual burden of both under- and overweight. Systematic and regular monitoring and surveillance of the social trajectory of nutritional status of women and men in Bangladesh is crucial to develop opposite strategy that addresses the persistent and chronic problem of underweight and the emerging problem of overweight. The dual existence of both types of malnutrition among women in Bangladesh must be taken into consideration so that public health interventions may be adopted through appropriate policy.
Information-based analysis of the relation between human muscle reaction and walking path

Kamal SM, Dawi NBM, Sim S, Tee R, Nathan V, Aghasian E, et al.

Technol Health Care, 2020;28(6):675-684.
PMID: 32200366 DOI: 10.3233/THC-192034

BACKGROUND: Walking is one of the important actions of the human body. For this purpose, the human brain communicates with leg muscles through the nervous system. Based on the walking path, leg muscles act differently. Therefore, there should be a relation between the activity of leg muscles and the path of movement.
OBJECTIVE: In order to address this issue, we analyzed how leg muscle activity is related to the variations of the path of movement.
METHOD: Since the electromyography (EMG) signal is a feature of muscle activity and the movement path has complex structures, we used entropy analysis in order to link their structures. The Shannon entropy of EMG signal and walking path are computed to relate their information content.
RESULTS: Based on the obtained results, walking on a path with greater information content causes greater information content in the EMG signal which is supported by statistical analysis results. This allowed us to analyze the relation between muscle activity and walking path.
CONCLUSION: The method of analysis employed in this research can be applied to investigate the relation between brain or heart reactions and walking path.
Decoding of the relationship between human brain activity and walking paths

Kamal SM, Sim S, Tee R, Nathan V, Aghasian E, Namazi H

Technol Health Care, 2020;28(4):381-390.
PMID: 31796717 DOI: 10.3233/THC-191965

BACKGROUND: The human brain controls all actions of the body. Walking is one of the most important actions that deals with the movement of the body. In fact, the brain controls and regulates human walking based on different conditions. One of the conditions that affects human walking is the complexity of path of movement. Therefore, the brain activity should change when a person walks on a path with different complexities.
OBJECTIVE: In this research we benefit from fractal analysis to study the effect of complexity of path of movement on the complexity of human brain reaction.
METHODS: For this purpose we calculate the fractal dimension of the electroencephalography (EEG) signal when subjects walk on different paths with different fractal dimensions (complexity).
RESULTS: The results of the analysis show that the complexity of brain activity increases with the increment of complexity of path of movement.
CONCLUSION: The method of analysis employed in this research can also be employed to analyse the reaction of the human heart and respiration when subjects move on paths with different complexities.
Fulltext Hydrolysis and characterization of sugar recovery from bakery waste under optimized subcritical water conditions

Mohd Thani N, Mustapa Kamal SM, Taip FS, Sulaiman A, Omar R, Siajam SI

J Food Sci Technol, 2020 Aug;57(8):3108-3118.
PMID: 32612303 DOI: 10.1007/s13197-020-04345-1

Subcritical water hydrolysis process for sugar recovery from leftover croissants (LC) and leftover doughnuts (LD) was optimised using response surface methodology with three process parameters as dependent variables and sugar yield as the response. The process parameters: temperature (160-200 °C), time (5-15 min), and solid loading (10-50%), on the sugar yield were investigated. For the LC sample, the optimised process conditions were determined to be: 200 °C, 6.17 min, and 10% solid loading producing an 80% hydrolysis yield of 466.11 ± 0.67 mg/g. Comparatively, the LD sample optimisation parameters were: 200 °C, 5 min, and 10% solid loading producing a 76.18% hydrolysis yield of 394.34 ± 0.33 mg/g. The sugar extracts were further characterise; which through scanning electron microscopy revealed the LC had most starch granules rupture during hydrolysis, while Fourier-transform infrared spectroscopy detected the presence of monosaccharides and oligosaccharides for both LC and LD. 5-hydroxymethylfurfural (5-HMF), a sugar degradation by-product, was also detected with 39.16 ± 0.61 and 20.59 ± 0.81 mg/g for the LC and LD, respectively, at optimal conditions.
Fulltext Effects of temperature and time on the physical characteristics of moist cakes baked in air fryer

Mior Zakuan Azmi M, Taip FS, Mustapa Kamal SM, Chin NL

J Food Sci Technol, 2019 Oct;56(10):4616-4624.
PMID: 31686693 DOI: 10.1007/s13197-019-03926-z

Baking temperature and time are among the conditions for producing good quality cakes. The aim of this study was to investigate the effects of baking temperature and time on the volume expansion, moisture content, and texture of moist cakes baked in either an air fryer or a convection oven. The cakes were baked under different conditions: (1) baking temperature of 150 °C, 160 °C, and 170 °C for both air fryer and convection oven and (2) baking time of 25, 30, 35 min for air fryer and 35, 40, 45 min for convection oven. Baking temperature and time were found to have a significant (p
Recovery of Phenolic Compounds from Jackfruit Seeds Using Subcritical Water Extraction

Alibekov RS, Mustapa Kamal SM, Taip FS, Sulaiman A, Azimov AM, Urazbayeva KA

Foods, 2023 Sep 02;12(17).
PMID: 37685228 DOI: 10.3390/foods12173296

Jackfruit is one of the major fruits cultivated in many Asian countries. Jackfruit seeds are generally disposed of into the environment, which causes an environmental concern that leads to biowaste accumulation. The seeds have excellent nutritional value, such as carbohydrates, protein, fats, minerals, and bioactive compounds. Bioactive compounds, such as phenolic, can be recovered from jackfruit seeds that could add value to the food and pharmaceutical industry. Thus, this study focused on utilizing subcritical water to extract the phenolic compounds from jackfruit seeds and correlate them with antioxidant activity (AA). The extraction of phenolic compounds was studied at different temperatures and extraction times. The highest total phenolic compounds (TPC) and AA were obtained by treating the jackfruit seed powder at 210 °C, 30 min, and 15% solid loading under subcritical water extraction (SWE) with 1.84 mg GAE/100 g (TPC) and 86% (AA). High correlation between the extracted TPC and AA of the jackfruit seed extracts was obtained (R2 = 0.96), indicating a significant positive relationship between TPC and AA. A higher amount of TPC was obtained via SWE as compared to Soxhlet extraction (1 h:0.53 mg GAE/100 g and 4 h:1.20 mg GAE/100 g). More pores were detected on the surface of the sample treated by SWE than using Soxhlet extraction. Thus, jackfruit seed extracts can be potentially beneficial in the fortification of fermented dairy or meat products.
Fulltext Comparative Study of The Yield and Physicochemical Properties of Collagen from Sea Cucumber (Holothuria scabra), Obtained through Dialysis and the Ultrafiltration Membrane

Saallah S, Roslan J, Julius FS, Saallah S, Mohamad Razali UH, Pindi W, et al.

Molecules, 2021 Apr 28;26(9).
PMID: 33924820 DOI: 10.3390/molecules26092564

Collagen was extracted from the body wall of sea cucumber (Holothuria scabra) using the pepsin-solubilized collagen method followed by isolation using dialysis and the ultrafiltration membrane. The yield and physicochemical properties of the collagen obtained from both isolation methods, denoted as D-PSC and UF-PSC, were compared. The ultrafiltration method affords a higher yield of collagen (11.39%) than that of the dialysis (5.15%). The isolated collagens have almost the same amino acid composition, while their functional groups, referred to as amide A, B, I, II, and III bands, were in accordance with commercial collagen, as verified by Fourier Transform Infrared (FT-IR) spectroscopy. The UV-Vis absorption peaks at 240 nm and 220 nm, respectively, indicated that the collagens produced are type-I collagen. The D-PSC showed interconnecting sheet-like fibrils, while the UF-PSC exhibited a flaky structure with flat-sheets arranged very close to each other. The higher yield and comparable physicochemical properties of the collagen obtained by ultrafiltration as compared with dialysis indicate that the membrane process has high potential to be used in large-scale collagen production for food and pharmaceutical applications.

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