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Fig. 1 | International Journal of Behavioral Nutrition and Physical Activity

Fig. 1

From: Differential associations of urbanicity and income with physical activity in adults in urbanizing China: findings from the population-based China Health and Nutrition Survey 1991-2009

Fig. 1

Predicted total PA according to urbanicity and income levels, China Health and Nutrition Survey 1991-2009a. aTotal physical activity predicted from sex-stratified, zero-inflated negative binomial models according to urbanicity (year-specific tertiles of low, medium, and high urbanicity) and income (year-specific tertiles of low, medium, and high income). Main exposure variables were year, urbanicity, income, the interaction between urbanicity and income, and the interaction between urbanicity, income and year. Models additionally control for region of China (North, Central, South) and age (ages 18-35y, 35-55y, 55-75y). Stars denote a statistically significant difference in mean PA for high versus low income at the p < 0.05 level for at each year. Abbreviations: PA, physical activity

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