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Table 1 Selected characteristics of participants by gender and residential density in 2017, in Nanjing of China a

From: The association between residential density and physical activity among urban adults in regional China

  Overall Gender P value Residential densitya P value
Men Women Lower Middle Higher
Number 1551 47.8 (741) 52.2 (810)   27.2 (422) 34.3 (532) 38.5 (597)  
Age (years, Mean ± SD) 54.7 ± 11.1 54.8 ± 11.4 54.7 ± 10.9 0.97 55.8 ± 10.8 54.4 ± 10.9 54.3 ± 11.5 0.08
Age group (years)
 -49 (younger) 35.9 (557) 36.8 (273) 35.1 (284) 0.10 31.0 (131) 36.7 (195) 38.7 (231) 0.07
 50–64 (middle-aged) 42.0 (652) 39.4 (292) 44.4 (360) 44.1 (186) 43.6 (232) 39.2 (234)
 65+ (elder) 22.1 (342) 23.8 (176) 20.5 (166) 24.9 (105) 19.7 (105) 22.1 (132)
Educational attainment (years)
  ≤ 9 47.3 (733) 40.2 (298) 53.7 (435) <0.01 65.5 (277) 44.4 (236) 36.9 (220) <0.01
 10–12 30.0 (466) 32.4 (240) 27.9 (226) 21.8 (92) 34.4 (183) 32.0 (191)
  ≥ 13 22.7 (352) 27.4 (203) 18.4 (149) 12.6 (53) 21.2 (113) 31.2 (186)
BMI Category (kg/m2)
  < 24 48.7 (755) 45.5 (337) 51.6 (418) <0.01 42.9 (181) 47.2 (251) 54.1 (323) <0.01
 24+ 51.3 (796) 54.5 (404) 48.4 (392) 57.1 (241) 52.8 (281) 45.9 (274)
Physical activity time (mins/week)
 <150 71.5 (1109) 71.8 (532) 71.2 (577) 0.82 63.3 (267) 67.7 (360) 80.7 (482) <0.01
  ≥ 150 28.5 (442) 28.2 (209) 28.8 (233) 36.7 (155) 32.3 (172) 19.3 (115)
  1. aResults presented as mean ± standard deviation for continuous data, and as percentages (number) for categorical data
  2. bResidential density tertile cut-off values are 56,524 and 29,786 persons/km2