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Table 2 Physical activity by sociodemographic variables among middle-aged Chinese adults in 2015 (MET·h/d)

From: The association between physical activity and body fat percentage with adjustment for body mass index among middle-aged adults: China health and nutrition survey in 2015

Sociodemographic Variables Male Female
N Median (25th, 75th) N Median (25th, 75th)
Ageb
 40–44 475 20.4 (10.4, 33.7) 594 19.2 (9.1, 33.6)
 45–49 460 19.7 (10.0, 36.4) 581 19.9 (9.8, 32.0)
 50–54 504 19.3 (8.7, 34.6) 597 17.0 (8.0, 30.4)
 55–59 436 17.6 (8.7, 33.8) 413 11.9 (6.8, 25.1)
 60–64 361 16.0 (6.0, 30.1) 342 10.2 (6.3, 20.1)
BMI Groupsa
 Normal weight 1107 20.1 (9.5, 36.9) 1304 16.5 (8.0, 29.5)
 Overweight/obese 1129 17.5 (7.8, 31.5) 1223 16.3 (7.6, 29.9)
Education a, b
 High 947 14.9 (7.6, 24.7) 934 13.8 (7.2, 22.4)
 Middle 907 21.2 (8.7, 39.5) 1044 17.1 (7.8, 31.3)
 Low 382 28.5 (12.9, 48.2) 549 22.9 (9.4, 41.1)
Household Income a, b
 High 807 17.5 (8.8, 29.4) 921 15.7 (7.6, 27.3)
 Middle 757 19.3 (8.7, 33.2) 847 17.1 (8.2, 29.7)
 Low 672 21.1 (8.5, 40.7) 759 17.1 (7.5, 33.4)
Regionb
 Northern 429 18.8 (9.1, 38.3) 545 18.0 (8.5, 31.8)
 Central 731 18.2 (7.6, 32.4) 857 15.0 (7.0, 28.5)
 Southern 1076 19.7 (9.1, 36.2) 1125 17.9 (8.0, 34.3)
Urbanization Indexa, b
 High 772 13.6 (5.9, 22.8) 1002 11.9 (6.8, 20.9)
 Middle 716 18.0 (8.2, 32.4) 859 16.4 (8.0, 29.5)
 Low 748 28.7 (14.6, 50.6) 666 27.1 (12.0, 44.4)
  1. ap < 0.05 in the Kruskal-Wallis test in males. bp < 0.05 in the Kruskal-Wallis test in females. cp < 0.01 in the Kruskal-Wallis test between sex