Table 1

Demographic characteristics of the participants

VariableOverall (n=38 515)Physical activityP valuesSitting time per dayP 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±SD55.65±12.1455.48±10.8154.62±12.0557.02±13.25<0.00155.46±11.9356.17±12.68<0.001
Gender*, % (95% CI)<0.001<0.001
 Women60.52 (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)
 Men39.48 (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/cohabiting89.76 (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/separated10.24 (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)0.2340.001
 ≤ Primary school44.86 (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 school55.14 (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
 <RMB50035.69 (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)
 ≥RMB100031.45 (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
 Never72.76 (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)
 Light5.59 (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)
 Moderate4.54 (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)
 Heavy17.11 (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
 Never77.46 (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)
 Light13.92 (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)
 Moderate4.73 (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)
 Heavy3.90 (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 poultry1.32±1.321.21±1.281.40±1.351.33±1.33<0.0011.31±1.331.34±1.310.410
 Fishery products0.11±0.160.10±0.150.12±0.160.11±0.16<0.0010.11±0.160.13±0.17<0.001
 Vegetables and fruits13.8±7.4712.49±7.4314.68±7.3714.07±7.44<0.00113.27±7.2315.24±7.91<0.001
 Soy products0.48±0.640.41±0.600.49±0.650.53±0.67<0.0010.49±0.650.46±0.63<0.001
Height (cm), mean±SD159.69±8.20160.65±8.24158.62±7.84160.07±8.43<0.001159.59±8.17159.98±8.28<0.001
Weight (kg), mean±SD63.48±11.1463.92±10.8662.44±10.7664.30±11.72<0.00163.60±11.0963.15±11.27<0.001
BMI (kg/m2), mean±SD24.84±3.5724.72±3.4624.77±3.5025.03±3.73<0.00124.92±3.5624.61±3.59<0.001
WC (cm), mean±SD84.07±10.4183.65±10.0383.44±10.1985.22±10.90<0.00184.42±10.3583.10±10.50<0.001
  • *Was presented as % and 95% CIs.

  • BMI, body mass index; WC, waist circumference.