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  1. Fulltext Nutritional status of orang asli (che wong tribe) adults in krau wildlife reserve, pahang
    Haemamalar K, Zalilah MS, Neng Azhanie A
    Malays J Nutr, 2010 Apr;16(1):55-68.
    PMID: 22691853 MyJurnal
    This is a descriptive study on nutritional status of Orang Asli (Che Wong tribe) adults in Krau Wildlife Reserve. Twenty-six households, comprising 29 men and 28 women,participated in the study. Dietary diversity was assessed using food frequency questionnaire with 37 food groups. Weight, height and waist circumference were measured using standard instruments. The mean age for men and women was 39.9 ± 17.1 years and 33.7 ± 16.1 years, respectively. Most (89.5%) of the adults had no formal education and about 89.5% of households were categorised as poor. There were 13.8% underweight, 72.4% normal, 10.3% overweight and 3.3% obese men. For women, 25.0%, 46.4%, and 28.6% were underweight, normal and overweight, respectively. While none of the men had at-risk waist circumference (men >90 cm), about 21.4% of women had waist circumference of >80 cm. The mean dietary diversity score was 9.47 ± 4.15 with men (9.48 ± 3.70) and women (9.46 ± 4.63) having similar scores. There was a significant correlation between waist circumference and household income (r=0.36, p< 0.01); however, the association was only significant in women (r=0.50, p< 0.01). Although under-nutrition still prevails, there are emerging cases of overweight and obesity in this rural Orang Asli community undergoing nutrition transition especially among the females.
  2. Fulltext Obesity indices predict hypertension among indigenous adults in Krau Wildlife Reserve, Peninsular Malaysia
    Chua EY, Zalilah MS, Haemamalar K, Norhasmah S, Geeta A
    J Health Popul Nutr, 2017 05 25;36(1):24.
    PMID: 28545536 DOI: 10.1186/s41043-017-0102-4
    BACKGROUND: The disease burden of indigenous peoples has been augmented by the rising prevalence of obesity and hypertension in this population. This study assessed the ability of obesity indices to predict hypertension among indigenous adults of Peninsular Malaysia.

    METHODS: In this cross-sectional study, 482 adults (223 men, 259 women) aged ≥18 years old were measured for body mass index (BMI), waist circumference (WC), waist-height ratio (WHtR), waist-hip ratio (WHR), and blood pressure. Receiver operating characteristic (ROC) analysis was used to determine the predictive ability of obesity indices for hypertension in men and women. Gender-specific logistic regression analyses were done to examine the association between obesity, defined by BMI, WC, WHtR and WHR, and hypertension.

    RESULTS: Prevalence of hypertension was 25.5%. Overall, WHtR was the best predictor of the presence of hypertension, in both men and women. The optimal WHtR cut-off values for hypertension were 0.45 and 0.52 in men and women, respectively. Obese adults with WHtR ≥0.5 had about two times increased odds of having hypertension compared to non-obese adults.

    CONCLUSIONS: WHtR may serve as a simple and inexpensive screening tool to identify individuals with hypertension in this relatively difficult to reach population.

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