Table 1.
Demographic characteristics of the participants
| Variable | Overall (n=38 515) | Physical activity | P values | Sitting time per day | P values | |||
| Vigorous (n=11 510) |
Moderate (n=14 672) | Light (n=12 333) |
≤7.5 hours (n=28 270) | >7.5 hours (n=10 245) | ||||
| Age (years), mean±SD | 55.65±12.14 | 55.48±10.81 | 54.62±12.05 | 57.02±13.25 | <0.001 | 55.46±11.93 | 56.17±12.68 | <0.001 |
| Gender*, % (95% CI) | <0.001 | <0.001 | ||||||
| Women | 60.52 (60.03 to 61.01) | 51.81 (50.89 to 52.72) | 70.90 (70.16 to 71.63) | 56.31 (55.44 to 57.19) | 62.21 (61.65 to 62.78) | 55.85 (54.89 to 56.81) | ||
| Men | 39.48 (38.99 to 39.97) | 48.19 (47.28 to 49.11) | 29.10 (28.37 to 29.84) | 43.69 (42.81 to 44.56) | 37.79 (37.22 to 38.35) | 44.15 (43.19 to 45.11) | ||
| Marital status*, % (95% CI) | <0.001 | <0.001 | ||||||
| Married/cohabiting | 89.76 (89.46 to 90.06) | 91.81 (91.31 to 92.31) | 90.18 (89.7 to 90.66) | 87.35 (86.76 to 87.94) | 90.21 (89.86 to 90.56) | 88.52 (87.9 to 89.14) | ||
| Widowed/single/divorced/separated | 10.24 (9.94 to 10.54) | 8.19 (7.69 to 8.69) | 9.82 (9.34 to 10.30) | 12.65 (12.06 to 13.24) | 9.79 (9.44 to 10.14) | 11.48 (10.86 to 12.10) | ||
| Education*, % (95% CI) | 0.234 | 0.001 | ||||||
| ≤ Primary school | 44.86 (44.36 to 45.35) | 44.74 (43.83 to 45.64) | 44.45 (43.64 to 45.25) | 45.46 (44.58 to 46.34) | 44.33 (43.75 to 44.91) | 46.31 (45.34 to 47.27) | ||
| ≥ Junior school | 55.14 (54.65 to 55.64) | 55.26 (54.36 to 56.17) | 55.55 (54.75 to 56.36) | 54.54 (53.66 to 55.42) | 55.67 (55.09 to 56.25) | 53.69 (52.73 to 54.66) | ||
| Per capita monthly income*, % (95% CI) | <0.001 | <0.001 | ||||||
| <RMB500 | 35.69 (35.21 to 36.17) | 36.22 (35.34 to 37.10) | 32.99 (32.23 to 33.76) | 38.40 (37.54 to 39.26) | 34.71 (34.15 to 35.26) | 38.40 (37.46 to 39.34) | ||
| RMB500~ | 32.86 (32.39 to 33.33) | 32.35 (31.50 to 33.21) | 33.80 (33.03 to 34.56) | 32.22 (31.40 to 33.05) | 34.38 (33.83 to 34.94) | 28.67 (27.79 to 29.54) | ||
| ≥RMB1000 | 31.45 (30.98 to 31.91) | 31.42 (30.58 to 32.27) | 33.21 (32.44 to 33.97) | 29.38 (28.57 to 30.18) | 30.91 (30.37 to 31.45) | 32.93 (32.02 to 33.84) | ||
| Smoking*, % (95% CI) | <0.001 | <0.001 | ||||||
| Never | 72.76 (72.31 to 73.20) | 66.48 (65.62 to 67.34) | 80.21 (79.56 to 80.85) | 69.76 (68.95 to 70.57) | 74.03 (73.52 to 74.54) | 69.24 (68.35 to 70.14) | ||
| Light | 5.59 (5.36 to 5.82) | 6.83 (6.37 to 7.29) | 4.26 (3.93 to 4.59) | 6.01 (5.59 to 6.43) | 5.66 (5.39 to 5.93) | 5.40 (4.96 to 5.84) | ||
| Moderate | 4.54 (4.34 to 4.75) | 5.49 (5.07 to 5.91) | 3.44 (3.15 to 3.74) | 4.97 (4.59 to 5.35) | 4.43 (4.19 to 4.67) | 4.86 (4.44 to 5.28) | ||
| Heavy | 17.11 (16.73 to 17.49) | 21.20 (20.45 to 21.95) | 12.09 (11.56 to 12.62) | 19.27 (18.57 to 19.96) | 15.88 (15.46 to 16.31) | 20.50 (19.72 to 21.28) | ||
| Drinking*, % (95% CI) | <0.001 | <0.001 | ||||||
| Never | 77.46 (77.04 to 77.88) | 71.74 (70.92 to 72.56) | 83.31 (82.70 to 83.91) | 75.84 (75.08 to 76.59) | 78.06 (77.58 to 78.54) | 75.79 (74.96 to 76.62) | ||
| Light | 13.92 (13.57 to 14.26) | 17.94 (17.24 to 18.64) | 10.39 (9.90 to 10.89) | 14.35 (13.73 to 14.97) | 13.58 (13.18 to 13.98) | 14.84 (14.15 to 15.52) | ||
| Moderate | 4.73 (4.51 to 4.94) | 5.80 (5.38 to 6.23) | 3.64 (3.34 to 3.94) | 5.01 (4.63 to 5.40) | 4.78 (4.53 to 5.03) | 4.58 (4.17 to 4.98) | ||
| Heavy | 3.90 (3.71 to 4.09) | 4.52 (4.14 to 4.90) | 2.66 (2.40 to 2.92) | 4.80 (4.42 to 5.18) | 3.58 (3.36 to 3.79) | 4.79 (4.38 to 5.21) | ||
| Dietary habits (kg/month), (mean±SD) | ||||||||
| Meat and poultry | 1.32±1.32 | 1.21±1.28 | 1.40±1.35 | 1.33±1.33 | <0.001 | 1.31±1.33 | 1.34±1.31 | 0.410 |
| Fishery products | 0.11±0.16 | 0.10±0.15 | 0.12±0.16 | 0.11±0.16 | <0.001 | 0.11±0.16 | 0.13±0.17 | <0.001 |
| Vegetables and fruits | 13.8±7.47 | 12.49±7.43 | 14.68±7.37 | 14.07±7.44 | <0.001 | 13.27±7.23 | 15.24±7.91 | <0.001 |
| Soy products | 0.48±0.64 | 0.41±0.60 | 0.49±0.65 | 0.53±0.67 | <0.001 | 0.49±0.65 | 0.46±0.63 | <0.001 |
| Height (cm), mean±SD | 159.69±8.20 | 160.65±8.24 | 158.62±7.84 | 160.07±8.43 | <0.001 | 159.59±8.17 | 159.98±8.28 | <0.001 |
| Weight (kg), mean±SD | 63.48±11.14 | 63.92±10.86 | 62.44±10.76 | 64.30±11.72 | <0.001 | 63.60±11.09 | 63.15±11.27 | <0.001 |
| BMI (kg/m2), mean±SD | 24.84±3.57 | 24.72±3.46 | 24.77±3.50 | 25.03±3.73 | <0.001 | 24.92±3.56 | 24.61±3.59 | <0.001 |
| WC (cm), mean±SD | 84.07±10.41 | 83.65±10.03 | 83.44±10.19 | 85.22±10.90 | <0.001 | 84.42±10.35 | 83.10±10.50 | <0.001 |
*Was presented as % and 95% CIs.
BMI, body mass index; WC, waist circumference.