Table 1.
Baseline characteristics of NHANES participants between 2005–2018
| Variables | Overall (n = 7596) |
Groups | p-value | |
|---|---|---|---|---|
| non-OAB (n = 6099) |
OAB (n = 1497) |
|||
| Age (years) | 47.24 ± 16.85 | 45.25 ± 16.33 | 58.15 ± 15.40 | < 0.001 |
| Gender | < 0.001 | |||
| Male | 3822 (49.65%) | 3205 (51.75%) | 617 (38.13%) | |
| Female | 3774 (50.35%) | 2894 (48.25%) | 880 (61.87%) | |
| BMI (kg/m2) | 29.12 ± 6.80 | 28.69 ± 6.51 | 31.47 ± 7.81 | < 0.001 |
| WC (cm) | 99.88 ± 16.55 | 98.80 ± 16.15 | 105.83 ± 17.45 | < 0.001 |
| Race | < 0.001 | |||
| Non-Hispanic White | 3169 (68.15%) | 2589 (68.90%) | 580 (64.00%) | |
| Non-Hispanic Black | 1586 (10.77%) | 1156 (9.59%) | 430 (17.22%) | |
| Mexican American | 930 (7.79%) | 750 (7.83%) | 180 (7.54%) | |
| Other Hispanic | 818 (5.92%) | 643 (5.95%) | 175 (5.74%) | |
| Other ethnicity | 1093 (7.38%) | 961 (7.73%) | 132 (5.50%) | |
| Education level | < 0.001 | |||
| < High school | 1619 (14.88%) | 1154 (13.17%) | 465 (24.29%) | |
| High school | 1616 (20.16%) | 1252 (19.44%) | 364 (24.09%) | |
| >High school | 4361 (64.96%) | 3693 (67.39%) | 668 (51.61%) | |
| PIR | < 0.001 | |||
| < 1.3 | 2520 (22.75%) | 1895 (21.26%) | 625 (30.91%) | |
| 1.3–3.5 | 2768 (36.26%) | 2194 (35.47%) | 574 (40.58%) | |
| > 3.5 | 2308 (40.99%) | 2010 (43.27%) | 298 (28.51%) | |
| Marital status | < 0.001 | |||
| Married/Living with Partner | 4499 (63.67%) | 3700 (64.60%) | 799 (58.62%) | |
| Widowed/Divorced/Separated | 1572 (16.84%) | 1086 (14.63%) | 486 (29.00%) | |
| Never married | 1525 (19.48%) | 1313 (20.78%) | 212 (12.38%) | |
| Drinking status | < 0.001 | |||
| Non-drinker | 1999 (20.71%) | 1504 (19.42%) | 495 (27.77%) | |
| 1–5 drinks/month | 3900 (52.02%) | 3152 (51.52%) | 748 (54.78%) | |
| 5–10 drinks/month | 581 (9.17%) | 501 (9.79%) | 80 (5.73%) | |
| 10 + drinks/month | 1115 (18.10%) | 941 (19.26%) | 174 (11.72%) | |
| Smoking status | 0.120 | |||
| Never smoker | 4262 (55.93%) | 3493 (56.87%) | 769 (50.79%) | |
| Former smoker | 1810 (24.81%) | 1402 (24.38%) | 408 (27.17%) | |
| Current smoker | 1524 (19.26%) | 1204 (18.75%) | 320 (22.03%) | |
| Physical activity | < 0.001 | |||
| Low | 4256 (53.40%) | 3313 (52.32%) | 943 (59.32%) | |
| Moderate | 2487 (34.97%) | 2051 (35.50%) | 436 (32.10%) | |
| High | 853 (11.62%) | 735 (12.18%) | 118 (8.58%) | |
| Hypertension | 1288 (13.94%) | 897 (12.95%) | 391 (19.40%) | < 0.001 |
| Diabetes | 1187 (12.04%) | 730 (9.36%) | 457 (26.76%) | < 0.001 |
| FBG (mg/dl) | 106.15 ± 30.37 | 104.14 ± 26.72 | 117.19 ± 43.83 | < 0.001 |
| TG (mg/dl) | 125.21 ± 106.35 | 125.32 ± 110.62 | 124.61 ± 78.98 | 0.072 |
| HDL-C (mg/dl) | 53.92 ± 16.12 | 53.90 ± 16.19 | 54.01 ± 15.70 | 0.800 |
| Coronary heart disease | 299 (3.41%) | 173 (2.61%) | 126 (7.77%) | < 0.001 |
| Congestive heart failure | 253 (2.73%) | 138 (2.03%) | 115 (6.52%) | < 0.001 |
| Mets | < 0.001 | |||
| Yes | 3,016 (37.37%) | 2,135 (35.01%) | 881 (58.85%) | |
| No | 4,580 (62.63%) | 3,964 (64.99%) | 616 (41.15%) | |
OAB, overactive bladder; BMI, body mass index; WC, waist circumference; PIR, family income-poverty; FBG, fasting blood glucose; TG, triglyceride; HDL-C, high-density lipoprotein cholesterol; Mets, metabolic syndrome