Journal of Health, Population, and Nutrition最新文献

Background: Undernutrition, manifested as stunting and/or thinness, is a major public health concern in low-income countries, including Ethiopia. Factors such as sociodemographic, economic, and dietary status influence children's academic achievement. This study aimed to assess the association between dietary diversity, nutritional status, and academic performance of school-age children in pastoral communities in Southeast Ethiopia.

Methods: A school-based cross-sectional study was conducted among 395 randomly selected school-age children. A multistage sampling followed by systematic random sampling was used to collect the data. Students' academic performance (AP) was evaluated by computing two-semester average grade scores of the 2016/17 academic year in all disciplines using the school record. A pre-tested, interviewer-administered, structured questionnaire was used to collect the data. To assess nutritional status, the z scores of height for age (HAZ) and BMI for age (BAZ) were employed according to WHO's new reference values. The WHO Anthroplus software was used to generate nutritional indices. A structural equation model (SEM) was used to examine the direct, indirect, and total effects of the dietary diversity score (DDS), HAZ score, and BAZ score on AP. The beta coefficient (β) along with the confidence interval (CI) were used to estimate the strength of the association.

Results: The prevalence of stunting and thinness was 26.6% (95% CI: 21.8, 31.4%) and 28.9% (95% CI: 24.3, 33.2%), respectively. The proportion of dietary diversity (DD) among school-age children was 40% (95% CI: 35.7, 45.3%) low DD and 60% (95% CI: 54.7, 64.3%) adequate DD. The SEM revealed that a unit increment in the child's DDS (unstandardised β = 0.130, 95% CI: 0.049 to 0.211) did have direct and total effects on the HAZ score. However, HAZ score, BAZ score, and DDS did not have direct, indirect, or total effects on AP. Similarly, DDS did not have direct or total effects on the BAZ score.

Conclusion: The academic performance (AP) was low among these school-age children, and the prevalence of stunting and thinness was high. Thus, nutrition interventions on dietary diversity for school-age children would be crucial interventions for increasing academic achievement.

Background: This cross-sectional descriptive study aimed to determine the prevalence and risk factors of technology addiction (TA) in adolescents, as well as investigate the association of TA with food addiction and emotional eating by body weight status.

Methods: Adolescents (n = 1388) completed a questionnaire that featured socio-demographic characteristics, the Game Addiction Scale (GAS), the Social Media Disorder Scale (SMD), the dimensional Yale Food Addiction Scale for Children 2.0 (dYFAS-C 2.0), and the Emotional Eating Scale Adapted for Use in Children and Adolescents (EES-C). The body mass index (BMI) Z-score was classified according to the World Health Organization.

Results: TA was present in one-fifth of adolescents, and boys were four times more likely to develop a digital game addiction (p < 0.001). A 1-point increase in the GAS score is associated with a 1.08-point increase in the dYFAS-C-2.0 score and a 0.5-point increase in the total EES-C score (p < 0.001). A 1-point increase in the SMD score was also related to an increased of 1.21 and 1.26, respectively (p < 0.001). All of these positive associations were significant in adolescents with overweight (p < 0.001).

Conclusions: Given the rapidly increasing prevalence of TA among adolescents, its association with food addiction, emotional eating, and body weight status is worrisome, and our findings shed light on the relevance of developing strategies to reduce the prevalence of TA in this population.

Background: Central and general obesity are commonly measured using tools like waist circumference (WC), hip circumference (HC), waist-to-hip ratio (WHR), and waist-to-height ratio (WHtR). However, the universally recognized cutoffs for these measures may be inadequate for individuals of Ethiopian descent. Due to the lack of universally applicable cutoffs, studies recommend tailoring the optimal screening thresholds to each population's specific characteristics. Therefore, this study aimed to determine body composition-based WC, WHR, and WHtR cutoffs for the healthy adult population of Ethiopia.

Method: A population based cross-sectional study was conducted in the Amhara region of Ethiopia from June to August 2023, collecting anthropometric and body composition data from 838 adult participants. Data were analyzed using Stata, and MedCalc software. The cut-off values were determined using ROC analysis, and performance was assessed using area under the curve (AUC), Youden index, sensitivity, and specificity.

Result: The optimal cut-off values for WC, HC, WHR, and WHtR to define obesity in men were 85.0 cm, 93.5 cm, 0.89, and 0.53 respectively. Correspondingly, these values in women were 81.1 cm, 97.2 cm, 0.84, and 0.5. These cutoff values showed the highest effectiveness in defining obesity especially for WC and WHtR. The new proposed cutoff values for waist circumference, hip circumference, and waist-to-height ratio had sensitivity ranging 76-93% and specificity of 83-94% in accurately identifying obesity. The current study also determined the cut-off values for underweight, normal weight, and overweight body weight categories. Accordingly, for men, the WC cut-offs were: ≤ 74.55 cm (underweight), 74.56-78.95 cm (normal), and 79.0-85.0 cm (overweight). For women, the cut-offs were: ≤ 68.25 cm (underweight), 68.26-79.59 cm (normal), and 79.60-81.10 cm (overweight). The WHtR thresholds were: ≤0.43 (underweight), 0.44-0.47 (normal), and 0.48-0.53 (overweight) in men; ≤0.43 (underweight), 0.44-0.50 (normal), and 0.50-0.51 (overweight) in women.

Conclusion: The findings indicate that the WC, WHR, and WHtR cutoff values for defining obesity in Ethiopian adults are lower than international standards. The newly proposed cutoff values showed improved sensitivity and specificity, suggesting their potential diagnostic relevance. Considering these country-specific cutoffs may be beneficial for clinical practice and obesity-related research in Ethiopia.

Background: Chlamydia trachomatis is a common sexually transmitted disease that is associated with considerable morbidity and harmful sequelae, including pelvic inflammatory disease and infertility. Strategies for prevention and treatment of infertility in women with C. trachomatis infection require further investigation. There is evidence suggesting that vitamin D could be a potential treatment. This study aimed to investigate the relationship between serum 25-hydroxyvitamin D [25(OH)D] levels, chlamydia seropositivity, and the risk of infertility in women.

Methods: We conducted this cross-sectional study using 2013-2016 National Health and Nutrition Examination Survey data. Women aged 18-39 years with complete serum 25(OH)D and chlamydia Pgp3Ab multiplex bead/enzyme-linked immunosorbent assay data available were included. The correlation between 25(OH)D level, chlamydia seropositivity, and infertility was evaluated using the weighted chi-squared test and the t-test with multivariate logistic regression and moderation effect models.

Results: Among the 1424 women who met our eligibility criteria, the weighted chlamydia seropositivity rate was 36.8%. The 25(OH)D level was significantly lower in the seropositive group compared with seronegative control. (P = 0.009). After adjusting for ethnicity, the effect of 25(OH)D was no longer significant (P = 0.693). Further analysis in the chlamydia-seropositive subset revealed that the vitamin D level was lower in the infertile group (P = 0.024). In an interaction model, 25(OH)D was found to antagonizes the positive relationship between chlamydia and infertility (OR = 0.985, 95% CI: 0.971-0.999, P = 0.040).

Conclusion: The serum vitamin D level may be more related to the prognosis in terms of infertility than to the risk of chlamydia infection. This finding may reveal a possible treatment strategy for chlamydia infection.

Background: Erectile dysfunction (ED) is a common issue among adult males. The Composite Dietary Antioxidant Index (CDAI) reflects anti-inflammatory levels and has been linked to various diseases, but its relationship with ED is unclear.

Materials and methods: This cross-sectional study utilised comprehensive data on clinical factors from the 2001-2004 National Health and Nutrition Examination Survey (NHANES). To investigate the link between variables and ED, we used multivariate regression analysis, univariate analysis, and subgroup analysis. The linear relationship between CDAI and ED was investigated by dose-response curve analysis. For sensitivity analysis, propensity score matching (PSM) was utilised to exclude the influence of potential confounders. Finally, we investigated the association between CDAI and ED using threshold effects analysis.

Results: We included in our research a total of 2896 persons with data on CDAI from NHANES 2001-2004. Among these, 2,098 participants were thought to be free of ED, whereas 798 participants had ED. We found that compared to the ED group, men in the non-ED group had higher levels of CDAI (p < 0.0001 before PSM and p = 0.0145 after PSM). Additionally, after adjusting for covariates, it was found that an elevated CDAI was associated with a reduced incidence of ED [OR = 0.65(p = 0.001) before PSM and OR = 0.62(p = 0.002) after PSM]. Subgroup analysis indicated stronger associations in high-risk groups, and dose-response curves confirmed a linear negative correlation between CDAI and ED.

Conclusions: This study revealed a negative linear relationship between CDAI and the incidence of ED. The CDAI can be used as an indicator for assessing ED risk and for ED prevention.