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  1. Prevalence and predictors of Helicobacter pylori infection in children and adults from the Penan ethnic minority of Malaysian Borneo
    Huang SS, Hassan AK, Choo KE, Ibrahim MI, Davis TM
    Am J Trop Med Hyg, 2004 Oct;71(4):444-50.
    PMID: 15516641
    To determine the prevalence of Helicobacter pylori antigen carriage in stool in the Penan ethnic minority in Malaysian Borneo, we studied 295 Penans 0.6-89.0 years of age from 1) the remote Limbang Division, 2) Mulu regional center, and 3) Belaga village. Overall, 37.7% of the subjects tested positive. Peak prevalence was reached by 10 years of age. There were no differences in age, sex, body mass index, and socioeconomic/domestic variables between antigen-positive and antigen-negative subjects. In a logistic regression analysis, subjects from Limbang were least likely to be antigen-positive (odds ratio [OR] = 0.23, 95% confidence interval [CI] = 0.12-0.44 versus other sites, P < 0.001). Availability of a flushing toilet was protective against H. pylori carriage (OR = 0.51, 95% CI = 0.27-0.95, P = 0.031). Infection with H. pylori among the Penan was less than reported in other low socioeconomic groups. The lowest prevalence in the most remote setting suggests that the infection has been a recent arrival in previously isolated communities.
  2. Fulltext Determining the prevalence of intestinal parasites in three Orang Asli (Aborigines) communities in Perak, Malaysia
    Sinniah B, Sabaridah I, Soe MM, Sabitha P, Awang IP, Ong GP, et al.
    Trop Biomed, 2012 Jun;29(2):200-6.
    PMID: 22735840 MyJurnal
    This study was conducted to determine the prevalence of intestinal parasites among children and adult Orang Aslis (Aborigines) from different locations in Perak. Faecal samples were collected and analyzed using the direct smear and formal ether sedimentation technique. Some of the faecal samples were stained using the Modified Acid fast stain for Cryptosporidium. Nail clippings of the respondents and the soil around their habitat were also analyzed. Of the 77 stool samples examined, 39 (50.6%) were positive for at least one intestinal parasite. The most common parasite detected was Trichuris trichiura (39.0%) followed by Ascaris lumbricoides (26.9%), Entamoeba coli (5.2%), Giardia lamblia (5.2%), Blastocystis hominis (3.9%), hookworm (3.9%), Entamoeba histolytica (1.3%), Iodamoeba butschlii (1.3%) and Cryptosporidium sp. (1.3%) respectively. Some respondents had single parasites (24.7%), some with two parasites (18.2%). Some with three parasites (6.5%) and one had four parasites species (1.3%). The parasites were slightly more common in females (54.7%) than males ((41.7%). The parasites were more common in the 13-20 year age group (90.9%) followed by 1-12 years (69.6%), 21-40 year age group (34.8%) and least in the 41-60 year age group (27.8%). Nail examinations of the respondents did not show any evidence of parasites. One had a mite, three had pollen grains and one had yeast cells isolated from the finger nails. Soil samples taken around their houses showed only one sample with a nematode ova and one with oocyst which was of a non human origin.
  3. Development of a validated instrument on socio-cultural and religious influences during menstruation in Malaysia
    Chew KS, Wong SSL, Hassan AK, Po KE, Zulkhairi N, Yusman NAL
    Med J Malaysia, 2021 Nov;76(6):814-819.
    PMID: 34806666
    INTRODUCTION: Although menstruation is a physiological process, it is shrouded with socio-cultural and religious beliefs. Healthcare providers should be aware that these influences may affect how women perceive their menstrual disorders. The primary objective of this study was to develop a validated questionnaire measuring the sociocultural and religious beliefs during menstruation.

    METHODS: In the first stage, a preliminary list of items measuring socio-cultural and religious beliefs during menstruation was generated. In the second stage, exploratory factor analysis was performed. Finally, confirmatory factor analysis using reflective measurement model and structural equation modelling was performed using partial least squares. The practices of these beliefs were included as mediating effect. Biological symptoms of menstruation were added in as another factor.

    RESULTS: A total of 400 female students from the Universiti Malaysia Sarawak, Malaysia were recruited. A preliminary list of 22 items was first generated. From the confirmatory factor analysis, two factors were iteratively removed due to poor factor loadings. Four factors were retained, i.e., i) "religious beliefs"; ii) "unpleasant (or dirty) nature of menstruation"; iii) "personal restrictions (dietary and behavior)"; and iv) "restrictions of interactions with male gender". In structural equation modelling, only 2 factors, i.e., the practices of "personal restrictions (dietary and behavioural)" and "restriction of interactions with males" had significant negative impact on quality of life.

    CONCLUSION: Menstruation should not be viewed purely from a biological lens as there are layers of sociocultural and religious beliefs surrounding it.

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