Table 1.
General Characteristics by Case-Control Status (n = 816).
| Characteristics | Mean ± SD/N (%) | |||||
|---|---|---|---|---|---|---|
| Total (N = 816) | Cases (n = 408) | Controls (n = 408) | P-Value | Adjusted** | ||
| Age | 816 | 45 + 6.3 | 45 + 3.3 | .123 | — | |
| Marital status | Single | 86 | 38 (44%) | 48 (56%) | .542 | Reference |
| Married | 730 | 370 (51%) | 36 (49%) | .9 (.6-1.5) | ||
| Education level | Illiterate | 505 | 297 (59%) | 208 (41%) | .001 | 2.8 (2.0-3.9)* |
| Educated | 311 | 111 (36%) | 200 (64%) | Reference | ||
| Occupation status | Housewives | 702 | 370 (53%) | 332 (47%) | .001 | 1.8 (1.2-2.9)* |
| Working | 114 | 38 (33%) | 76 (67%) | Reference | ||
| Income categories | Above/equal 2 | 439 | 206 (47%) | 233 (53%) | .06 | Reference |
| Below | 377 | 202 (54%) | 175 (46%) | 1.0 (.7-1.3) | ||
| Age at menarche (year) | <12 years | 308 | 140 (47%) | 168 (53%) | .035 | Reference |
| >12 years | 508 | 268 (53%) | 240 (47%) | .6 (.4-.8)* | ||
| Age of 1st pregnancy (year) | <20 years | 431 | 199 (46%) | 232 (54%) | .032 | Reference |
| >20 years | 276 | 154 (54%) | 122 (46%) | 1.0 (1.0-1.57)* | ||
| Breastfeeding practices | No/rare | 82 | 49 (14%) | 33 (9%) | .052 | Reference |
| Yes | 628 | 303 (86%) | 325 (91%) | .6 (.4-.9)* | ||
| Menopausal status | Premenopausal <45 year | 390 | 190 (49%) | 200 (51% | .023 | Reference |
| Postmenopausal >45 years | 426 | 218 (51%) | 208 (49%) | 2.9 (1.5-3.9)* | ||
| Family history of cancer | No | 585 | 281 (69%) | 304 (74%) | .631 | Reference |
| Breast cancer | 102 | 62 (16%) | 40 (10%) | 1.8 (.7-2.6) | ||
| Any other cancer | 125 | 61 (15%) | 64 ((16%) | --- | ||
| BMI | Normal | 340 | 97 (24%) | 138 (33%) | .431 | Reference |
| Obese/overweight | 476 | 106 (26%) | 78 (19%) | 1.01 (1-1.04* | ||
| WHR | Normal (<.85) | 431 | 278 (68%) | 304 (74%) | Reference | |
| Higher WHR (>.85) | 385 | 130 (32%) | 104 (26%) | .223 | 2.2 (1.2-3.9)* | |
SD: standard deviation; N%: number of women (percentage), * At α = .05, to compare the 2 groups, student t tests and chi square tests were use2 Average family size of KP ie, 7,2 Average income of KP (2010-11) ie, Rs. 20,130/.
**Adjusted with marital status as single, educated women, working women, low income, **Adjusted with age at first menarche, age at first pregnancy, family history of BC, menopause status and breast-feeding practice.