Background: To examine time trends in comorbidity of hypertension and type 2 diabetes (T2DM) and their diagnosis, treatment, and management in China during 2000-2015 and study factors associated with these outcomes. Methods: Longitudinal data collected from the China Health and Nutrition Survey (CHNS) during 2000-2015 were analyzed. Of the 28,204 adults, 832 had both hypertension and T2DM were selected. Average systolic blood pressure (SBP) and diastolic blood pressure (DBP) and hypertension prevalence among T2DM patients, and treatment and control of hypertension and T2DM among patients with both conditions were examined for all and by sex and weight status. Mixed effects models assessed the associations. Results: From 2000 to 2015, among patients with T2DM, hypertension prevalence dropped from 88.4% to 83.0% and BPs decreased (P < 0.05). Men and overweight/obese patients had greater decreases in hypertension prevalence and DBP, while women had a larger decrease in SBP than men. Over time, among patients with both hypertension and T2DM, rates of hypertension treatment (45.3% to 57.7%), hypertension control (3.0% to 10.9%) and T2DM treatment (90.0% to 95.6%) increased, but were still very low except for T2DM treatment (all P < 0.001). Age, gender, smoking, drinking, household income, education, residence, and weight status were significantly associated with prevalence, treatment, and control of hypertension, and T2DM treatment among patients with both hypertension and T2DM. Conclusion: Rates of hypertension treatment and control among patients with both hypertension and T2DM have improved in recent years, but were still low.
Objectives: Examine school children’s physical activity (PA) and sedentary behaviors (SB) during 2015-2017 and study their effects on children’s weight status and their relevant gender differences in China. Methods: This open cohort study included students from 5 major cities (Beijing, Shanghai, Xi’an, Nanjing, and Chengdu) across China. Data were collected from students in 2015, 2016, and 2017 (n = 5,535) and from their parents and school personnel. Children’s weight, height, and waist circumference were measured. SB and PA factors were evaluated using questionnaires. Mixed effects models examined the relationship between weight status and PA/SB-associated factors using this longitudinal data. Results: These children had high rates of obesity (12.4%, 95% CI 11.6%-13.3%) and central obesity (28.1%, 95% CI 26.9%-29.3%) during 2015-2017. Boys were more likely to be obese (16.5% vs. 8.4%) and central obese (36.3% vs. 19.8%) and spent more time in screen viewing than girls (hours/week ± SD: 2015, 1.8 ± 2.5 vs. 1.5 ± 2.0; 2016, 2.0 ± 2.4 vs. 1.8 ± 2.5; 2017, 1.7 ± 2.3vs. 1.4 ± 2.1 hours/week). Those who walked < 5 minutes on their average daily walk to school were more likely to be obese (OR: 1.96, 95% CI 1.03-3.73) than those who spent ≥ 15 minutes on walking to school. When stratified by gender, this higher risk was only observed in girls (OR: 3.01, 95% CI 1.09-8.35). Children who spent more time in screen viewing were more likely to be obese (OR: 1.13, 95% CI 1.06-1.21) and have central obesity (OR: 1.05, 95% CI 1.02-1.09). The association for obesity was consistent in boys and girls (boys, OR: 1.15, 95% CI 1.05-1.25; girls, OR: 1.12, 95% CI 1.00-1.24). Conclusions: More screen time and less active time were risk factors for developing obesity in urban Chinese children. The associations varied by gender.
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