Table 1.
Demographic characteristics
| All respondents N = 3,316 |
Respondents with UI N = 1,366 |
Respondents with no UI N = 1,950 |
P – value | |
|---|---|---|---|---|
|
| ||||
| Age (years): | ||||
| 40–49 | 772 (24%) | 310 (23%) | 462 (24%) | 0.85 |
| 50–59 | 893 (27%) | 371 (27%) | 522 (27%) | |
| 60–69 | 753 (23%) | 323 (24%) | 430 (22%) | |
| 70–79 | 544 (17%) | 221 (16%) | 323 (17%) | |
| 80+ | 311 (10%) | 127 (9%) | 184 (10%) | |
|
| ||||
| BMI (kg/m2): | ||||
| <25 | 1104 (33%) | 352 (26%) | 752 (39%) | P < 0.001 |
| 25–29.9 | 953 (29%) | 374 (27%) | 579 (30%) | |
| 30–34.9 | 654 (20%) | 308 (23%) | 346 (18%) | |
| 35+ | 598 (18%) | 329 (24%) | 269 (14%) | |
|
| ||||
| Parity: | ||||
| 0 | 360 (11%) | 124 (9%) | 236 (12%) | 0.004 |
| 1+ | 2,842 (89%) | 1,207 (91%) | 1,635 (88%) | |
|
| ||||
| Marital status | ||||
| Married | 2,117 (65%) | 870 (64%) | 1,247 (65%) | 0.09 |
| Widowed | 506 (16%) | 221 (16%) | 285 (15%) | |
| Separated or divorced | 467 (14%) | 202 (15%) | 265 (14%) | |
| Never married | 174 (5%) | 58 (4%) | 116 (6%) | |
|
| ||||
| Education | ||||
| 11th grade or less | 269 (8%) | 104 (8%) | 165 (9%) | <0.001 |
| High school graduate | 1,377 (43%) | 514 (39%) | 863 (45%) | |
| Some college | 789 (25%) | 377 (28%) | 412 (22%) | |
| College graduate | 452 (14%) | 195 (15%) | 257 (14%) | |
| Post-graduate work | 330 (10%) | 143 (11%) | 187 (10%) | |
|
| ||||
Numbers in columns do not add up to total number in each group due to missing values
P value was calculated using Chi-square test.