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Table 1 Comparison of characteristics across different depression and obesity groups at baseline

From: Comorbid depression and obesity, and its transition on the risk of functional disability among middle-aged and older Chinese: a cohort study

 

All participants

Neither condition

Depression alone

Obesity alone

Comorbiditya

P value

N

5507

2384 (43.3%)

2390 (43.4%)

447 (8.1%)

286 (5.2%)

 

Socio-demographic and lifestyle factors

Mean age (years), mean (SD)

60.6 ± 9.4

61.2 ± 9.6

60.9 ± 9.3

58.0 ± 8.8

57.9 ± 8.2

< 0.001

Gender, n (%)

 Male

2072 (37.6%)

1052 (44.1%)

831 (34.8%)

130 (29.1%)

59 (20.6%)

< 0.001

 Female

3435 (62.4%)

1332 (55.9%)

1559 (65.2%)

317 (70.9%)

227 (79.4%)

Education level, n (%)

 Illiterate/no formal education

3002 (54.5%)

1203 (50.5%)

1438 (60.2%)

197 (44.1%)

164 (57.3%)

< 0.001

 Primary school

1248 (22.7%)

558 (23.4%)

532 (22.3%)

99 (22.1%)

59 (20.6%)

 Middle school or above

1257 (22.8%)

623 (26.1%)

420 (17.6%)

151 (33.8%)

63 (22.0%)

Current marital status, n (%)

 Married or cohabitated

4679 (85.0%)

2074 (87.0%)

1948 (81.5%)

411 (91.9%)

246 (86.0%)

< 0.001

 Not marriedb

828 (15.0%)

310 (13.0%)

442 (18.5%)

36 (8.1%)

40 (14.0%)

Area of residence, n (%)

 Urban

1762 (32.0%)

813 (34.1%)

635 (26.6%)

209 (46.8%)

105 (36.7%)

< 0.001

 Rural

3745 (68.0%)

1571 (65.9%)

1755 (73.4%)

238 (53.2%)

181 (63.3%)

Ever smoker, n (%)

1885 (34.2%)

935 (39.2%)

787 (32.9%)

106 (23.7%)

57 (19.9%)

< 0.001

Ever drinker, n (%)

1914 (34.8%)

868 (36.4%)

852 (35.7%)

130 (29.1%)

64 (22.4%)

< 0.001

Clinical / biochemical measures, mean (SD)

BMI (kg/m2)

23.6 ± 4.1

22.8 ± 2.9

22.3 ± 2.9

30.6 ± 3.3

30.8 ± 3.6

< 0.001

Systolic BP (mmHg)

131.3 ± 21.9

130.9 ± 21.8

129.6 ± 22.0

138.5 ± 21.1

136.6 ± 20.3

< 0.001

Diastolic BP (mmHg)

75.6 ± 12.1

75.4 ± 11.9

74.2 ± 12.0

80.9 ± 11.8

80.4 ± 11.4

< 0.001

HbA1c (%)

5.3 ± 0.8

5.2 ± 0.8

5.3 ± 0.8

5.4 ± 0.8

5.6 ± 1.0

< 0.001

Plasma glucose (mmol/L)

6.1 ± 1.9

6.1 ± 1.8

6.1 ± 2.0

6.4 ± 2.0

6.5 ± 2.1

< 0.001

Multimorbidity, n (%)

 No

2380 (44.9%)

1227 (53.2%)

924 (40.3%)

150 (35.4%)

79 (28.4%)

< 0.001

 Yes

2925 (55.1%)

1081 (46.8%)

1371 (59.7%)

274 (64.6%)

199 (71.6%)

  1. Abbreviation: BMI Body mass index, BP Blood pressure, HbAlc Glycated haemoglobin, SD Standard deviation
  2. aComorbidity was defined as the co-existence of depression and obesity
  3. bNot married included separated, divorced, widowed, and never married