Table 1 Baseline characteristics of all participants were stratified by OAB, weighted.

From: Association of weight-adjusted waist index (WWI) with overactive bladder (OAB): a cross-sectional study from NHANES 2005–2018

Characteristic

Overall, N = 65,687,127 (100%)

Non-OAB, N = 55,779,713 (85%)

OAB, N = 9,907,414 (15%)

P value

Age (%)

   

< 0.001

20–40

21,660,983 (33%)

20,107,527 (36%)

1,553,456 (16%)

 

41–60

27,381,650 (42%)

23,522,062 (42%)

3,859,588 (39%)

 

> 60

16,644,494 (25%)

12,150,124 (22%)

4,494,370 (45%)

 

Gender (%)

   

< 0.001

Male

34,371,927 (52%)

30,231,148 (54%)

4,140,779 (42%)

 

Female

31,315,200 (48%)

25,548,565 (46%)

5,766,635 (58%)

 

Race (%)

   

< 0.001

Non-Hispanic white

46,981,215 (72%)

40,405,444 (72%)

6,575,771 (66%)

 

Non-Hispanic black

6,421,270 (9%)

4,846,345 (9%)

1,574,925 (16%)

 

Other

7,788,743 (12%)

6,728,304 (12%)

1,060,439 (11%)

 

Mexican American

4,495,899 (7%)

3,799,619 (7%)

696,279 (7%)

 

Married/live with partner (%)

   

< 0.001

No

21,847,441 (33%)

18,112,105 (32%)

3,735,336 (38%)

 

Yes

43,839,686 (67%)

37,667,607 (68%)

6,172,078 (62%)

 

Education level (%)

   

< 0.001

Below high school

8,000,991 (12%)

6,020,523 (11%)

1,980,468 (20%)

 

High school or above

57,686,136 (88%)

49,759,189 (89%)

7,926,946 (80%)

 

PIR (%)

   

< 0.001

Not Poor

54,105,752 (82%)

46,793,402 (84%)

7,312,349 (74%)

 

Poor

11,581,375 (18%)

8,986,310 (16%)

2,595,065 (26%)

 

Obesity (%)

   

< 0.001

No

40,169,084 (61%)

35,349,012 (63%)

4,820,072 (49%)

 

Yes

25,518,043 (39%)

20,430,701 (37%)

5,087,342 (51%)

 

Smoking (%)

   

< 0.001

Never

35,757,440 (54%)

30,963,977 (56%)

4,793,463 (48%)

 

Former

18,083,758 (28%)

14,972,954 (27%)

3,110,805 (31%)

 

Current

11,845,929 (18%)

9,842,782 (18%)

2,003,147 (20%)

 

Physical activity (%)

   

< 0.001

Inactive

14,647,615 (22%)

11,926,158 (21%)

2,721,457 (27%)

 

Active

51,039,512 (78%)

43,853,555 (79%)

7,185,957 (73%)

 

Drinking (%)

   

< 0.001

Former

8,196,362 (12%)

6,323,444 (11%)

1,872,917 (19%)

 

Heavy

12,850,340 (20%)

11,460,208 (21%)

1,390,132 (14%)

 

Mild

26,859,757 (41%)

22,908,299 (41%)

3,951,458 (40%)

 

Moderate

11,648,092 (18%)

10,172,603 (18%)

1,475,488 (15%)

 

Never

6,132,576 (9.3%)

4,915,158 (8.8%)

1,217,418 (12%)

 

Hypertension (%)

   

< 0.001

No

38,879,189 (59%)

34,836,971 (62%)

4,042,218 (41%)

 

Yes

26,807,938 (41%)

20,942,741 (38%)

5,865,197 (59%)

 

Diabetes (%)

   

 < 0.001

No

51,509,030 (78%)

45,235,359 (81%)

6,273,671 (63%)

 

Yes

14,178,097 (22%)

10,544,354 (19%)

3,633,743 (37%)

 

High cholesterol (%)

   

< 0.001

No

40,777,337 (62%)

35,846,897 (64%)

4,930,440 (50%)

 

Yes

24,909,789 (38%)

19,932,816 (36%)

4,976,974 (50%)

 

WWI (mean (SD))

10.96 (0.81)

10.89 (0.79)

11.37 (0.80)

< 0.001

  1. Mean (SD) for continuous variables: the P value was calculated by the weighted linear regression model.
  2. Percentages (weighted N, %) for categorical variables: the P value was calculated by the weighted chi-square test.
  3. OAB, overactive bladder; PIR, Ratio of family income to poverty; WWI, weight-adjusted-waist index.
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