Table 1 Baseline characteristics of participants, weighted.

From: The nonlinear association between body roundness index and infertility in married women

Variables

Control (n = 1101)

Infertility(n = 204)

P-value

Age(years)

34.71 ± 6.67

36.58 ± 6.07

0.0011

BMI (kg/m2)

28.88 ± 7.67

31.81 ± 8.63

0.0021

PIR

3.13 ± 1.61

3.22 ± 1.56

0.5483

Race (%)

  

0.8540

 Mexican American

13.04

8.58

 

 Other hispanic

7.71

4.17

 

 Non-hispanic white

60.17

71.30

 

 Non-hispanic black

6.18

7.15

 

 Other

12.90

8.80

 

Education level (%)

  

0.8473

 Less than high school

25.30

24.63

 

 High school or high diploma

74.70

75.37

 

Moderate physical activity (%)

  

0.6410

 No

47.19

49.80

 

 Yes

52.81

50.20

 

Hypertension (%)

  

0.7601

 No

88.39

79.41

 

 Yes

11.61

20.59

 

Diabetes (%)

  

< 0.0001

 No

93.39

85.69

 

 Yes

6.61

14.31

 

Hyperlipidemia (%)

  

0.0751

 No

85.48

79.81

 

 Yes

14.52

20.19

 

Alcohol consumption (%)

  

0.8311

 No

36.83

36.10

 

 Yes

63.17

63.90

 

Smoking status (%)

  

0.2992

 No

75.17

71.02

 

 Yes

24.83

28.98

 

Regular periods in past 12 month (%)

  

0.2802

 No

11.90

15.07

 

 Yes

88.10

84.93

 

History of pelvic infection treatment (%)

  

0.1099

 No

96.71

94.11

 

 Yes

3.29

5.89

 

Ever use female hormones (%)

  

0.7271

 No

93.32

92.36

 

 Yes

6.68

7.64

 

 BRI

5.22 ± 2.35

6.11 ± 2.52

0.0016

  1. Mean ± SD for continuous variables: the P value was calculated by the weighted linear regression model. (%) for categorical variables: the P value was calculated by the weighted chi-square test.