Table 2 Comparison of categorical variables by case-control status (787 cases and 928 controls) in Fars province, Iran, 2009
Characteristic | Cases (n = 787) | Controls (n = 928) | P-value* | |||
|---|---|---|---|---|---|---|
n | % | n | % | |||
Education level | Illiterate | 171 | 21.7 | 371 | 40.0 | 0.001 |
Primary | 284 | 36.1 | 303 | 32.6 | ||
High-school | 239 | 30.4 | 217 | 23.4 | ||
Academic | 93 | 11.8 | 37 | 4.0 | ||
Occupation status | Housewife | 635 | 80.7 | 873 | 94.1 | 0.001 |
Employed | 152 | 19.3 | 55 | 5.9 | ||
Marital status | Married | 665 | 84.5 | 777 | 83.7 | 0.440 |
Divorced | 11 | 1.4 | 8 | 0.90 | ||
Widow | 111 | 14.1 | 143 | 15.4 | ||
Menopause status | Pre-Menopausal | 330 | 41.9 | 476 | 51.3 | 0.001 |
Post- Menopausal | 457 | 58.1 | 452 | 48.7 | ||
Age at first pregnancy (year) | < 25 | 613 | 77.9 | 831 | 89.55 | 0.001 |
≥25 | 174 | 22.1 | 97 | 10.45 | ||
Age at first marriage (year) | < 20 | 478 | 60.7 | 713 | 76.8 | 0.001 |
≥20 | 309 | 39.3 | 215 | 23.2 | ||
Breastfeeding duration (month) | ≤60 | 475 | 60.4 | 385 | 41.5 | 0.001 |
> 60 | 312 | 39.6 | 643 | 58.5 | ||
OC use | Never | 280 | 35.6 | 397 | 42.8 | 0.002 |
Ever | 507 | 64.4 | 531 | 57.2 | ||
Parity | ≤3 | 354 | 45.0 | 317 | 34.2 | 0.001 |
> 3 | 433 | 55.0 | 611 | 65.8 | ||