Skip to main content

Table 2 Baseline characteristics in male study population (N = 6224)

From: Relationship between body mass index and depressive symptoms: the “fat and jolly” hypothesis for the middle-aged and elderly in China

Variables

Under-weight (%)

Normal weight (%)

Over-weight (%)

Obese (%)

χ2

P

Age (years)

 45-49

29 (6.71)

566 (15.31)

331 (20.87)

137 (26.97)

282.696

0.000

 50-54

35 (8.10)

538 (14.55)

260 (16.39)

70 (13.78)

  

 55-59

55 (12.73)

804 (21.74)

334 (21.06)

104 (20.47)

  

 60-64

78 (18.06)

652 (17.63)

296 (18.66)

94 (18.50)

  

 65-69

66 (15.28)

483 (13.06)

181 (11.41)

52 (10.24)

  

  ≥ 70

169 (39.12)

655 (17.71)

184 (11.60)

51 (10.04)

  

Education

 Illiterate

95 (21.99)

521 (14.09)

125 (7.88)

45 (8.86)

139.546

0.000

 Less than elementary school

294 (68.06)

2731 (73.85)

1145 (72.19)

367 (72.24)

  

 High school

27 (6.25)

290 (7.84)

193 (12.17)

50 (9.84)

  

 Above vocational school

16 (3.70)

156 (4.22)

123 (7.76)

46 (9.06)

  

Marital status

 Single

70 (16.20)

409 (11.06)

91 (5.74)

34 (6.69)

62.317

0.000

 Married

362 (83.80)

3289 (88.94)

1495 (94.26)

474 (93.31)

  

Hukou

 Non-agricultural hukou

58 (86.57)

607 (83.59)

475 (70.05)

162 (68.11)

175.167

0.000

 Agricultural hukou

374 (13.43)

3091 (16.41)

1111 (29.95)

346 (31.89)

  

Current residence

 Rural

318 (73.61)

2568 (69.44)

861 (54.29)

252 (49.61)

175.857

0.000

 Urban

114 (26.39)

1130 (30.56)

725 (45.71)

256 (50.39)

  

Smoke

 NO

95 (21.99)

832 (22.50)

475 (29.95)

164 (32.28)

159.328

0.000

 Former smoke

65 (15.05)

508 (13.74)

333 (21.00)

126 (24.80)

  

 Current smoke

272 (62.96)

2358 (63.76)

778 (49.05)

218 (42.91)

  

Drinking

 NO

226 (52.31)

1590 (43.00)

708 (44.64)

227 (44.69)

19.050

0.000

 Less than once a month

39 (9.03)

410 (11.09)

167 (10.53)

70 (13.78)

  

 More than once a month

167 (38.66)

1698 (45.92)

711 (44.83)

211 (41.54)

  

Eating meals

  ≤ 2 meals per day

72 (16.67)

537 (14.52)

157 (9.90)

47 (9.25)

55.712

0.000

 3 meals per day

346 (80.09)

3089 (83.53)

1416 (89.28)

459 (90.35)

  

  ≥ 4 meals per day

14 (3.24)

72 (1.95)

13 (0.82)

2 (0.39)

  

Taking activities

 No

263 (60.88)

1865 (50.43)

699 (44.07)

230 (45.28)

45.621

0.000

 Yes

169 (39.12)

1833 (49.57)

887 (55.93)

278 (54.72)

  

Ever been in major accidental injury

 NO

374 (86.57)

3232 (87.40)

1359 (85.69)

451 (88.78)

4.431

0.219

 Yes

58 (13.43)

466 (12.60)

227 (14.31)

57 (11.22)

  

Self-report health status

 Very poor

92 (21.30)

525 (14.20)

199 (12.55)

68 (13.39)

62.035

0.000

 Poor

182 (42.13)

1297 (35.07)

527 (33.23)

180 (35.43)

  

 Fair

116 (26.85)

1266 (34.23)

549 (34.62)

161 (31.69)

  

 Good

37 (8.56)

484 (13.09)

229 (14.44)

74 (14.57)

  

 Very good

5 (1.16)

126 (3.41)

82 (5.17)

25 (4.92)

  

Having regular physical exercises

 No physical exercise

271 (62.73)

2340 (63.28)

971 (61.22)

324 (63.78)

6.762

0.343

 Less than regular physical exercises

87 (20.14)

681 (18.42)

297 (18.73)

80 (15.75)

  

 Regular physical exercises

74 (17.13)

677 (18.31)

318 (20.05)

104 (20.47)

  

CESD

 CES-D < 10

240 (55.56)

2490 (67.33)

1195 (75.35)

388 (76.38)

84.293

0.000

 CES-D ≥ 10

192 (44.44)

1208 (32.67)

391 (24.65)

120 (23.62)

  
  1. CESD: Center for Epidemiologic Studies- depressive symptoms scale
  2. BMI body mass index, BMI Categories include Underweight (–18.5 kg/m2)/Normal weight (18.5–24 kg/m2)/Overweight (24–28 kg/m2)/Obesity (28– kg/m2)
  3. Hukou: it is an important part of household registration in china and is strictly enforced.Non-agricultural hukou people primarily live in the city and work in factories, public institutions and other workplaces. They have no farm land but have the convenience of city life. Agricultural hukou people primarily live in villages and depend on agriculture and farming for their livelihood