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Table 1 The descriptive characteristics of 12,829 retired Chinese women of The DFTJ Cohort, by number of parity

From: Association between parity and obesity patterns in a middle-aged and older Chinese population: a cross-sectional analysis in the Tongji-Dongfeng cohort study

Variable

Parity

1

2

3

≥4

χ 2/F

P for trend

(n = 4362)

(n = 4410)

(n = 2543)

(n = 1514)

Age (years) (mean ± SD)

58.61 ± 4.69

64.84 ± 5.46

69.88 ± 6.01

74.36 ± 5.97

4252.18**

<0.001

Education level

2561.64**

<0.001

 Primary school or illiteracy (%)

415 (9.6)

1184 (27.0)

1116 (44.2)

1022 (68.1)

  

 Middle school (%)

1742 (40.1)

1858 (42.3)

973 (38.5)

378 (25.2)

 

 High school (%)

1767 (40.7)

1049 (23.9)

362 (14.3)

77 (5.1)

 

 College or higher (%)

416 (9.6)

298 (6.8)

73 (2.9)

23 (1.5)

 

Marital status

828.61**

<0.001

 Single (%)

6 (0.1)

3 (0.1)

3 (0.1)

1 (0.1)

  

 Married or Remarried (%)

3892 (89.7)

3692 (84.0)

1988 (78.6)

990 (65.6)

 

 Divorced (%)

169 (3.9)

108 (2.5)

22 (0.9)

4 (0.3)

 

 Widowed (%)

274 (6.3)

593 (13.5)

515 (20.4)

515 (34.1)

 

Physical activity (%)

3918 (89.8)

3925 (89.0)

2221 (87.3)

1226 (81.0)

89.25**

<0.001

Current/Former smoker (%)

61 (1.4)

105 (2.4)

115 (4.5)

121 (8.0)

184.87**

<0.001

Passive smoking (%)

1500 (35.0)

1193 (27.6)

587 (23.6)

333 (22.4)

146.58**

<0.001

Current/Former alcohol drinker (%)

548 (12.6)

479 (10.9)

251 (9.9)

124 (8.2)

26.87**

<0.001

Current tea drinker (%)

1841 (42.2)

1603 (36.4)

824 (32.4)

403 (26.6)

144.00**

<0.001

Diabetes Mellitus (%)

406 (9.3)

662 (15.1)

523 (20.7)

344 (22.8)

222.34**

<0.001

Hypertension (%)

1337 (30.7)

1966 (44.6)

1368 (53.9)

888 (58.7)

553.88**

<0.001

Ever used Contraceptives (%)

845 (19.5)

885 (20.2)

434 (17.2)

153 (10.2)

83.26**

<0.001

Hormone replacement therapy (%)

160 (3.7)

113 (2.6)

52 (2.1)

13 (0.9)

40.64**

<0.001

Menopause (%)

4090 (93.8)

4333 (98.3)

2523 (99.3)

1495 (98.7)

238.61**

<0.001

Abortion frequency

519.00**

<0.001

 0 time (%)

1033 (24.3)

1497 (35.1)

1033 (42.1)

772 (53.1)

  

 1 time (%)

1434 (33.7)

1328 (31.1)

764 (31.1)

364 (25.0)

 

 2 or more times (%)

1786 (42.0)

1441 (33.8)

658 (26.8)

318 (21.9)

 
  1. Numerical data are presented as mean ± SD and tested with F test; Categorical data are presented with percentage in parentheses after the numbers and tested with χ 2 test
  2. **P < 0.001