Table 1 Demographic and epidemiological parameters of breast cancer cases versus controls.
Variables | Cases (n = 498) | Cases (%) | Controls (n = 498) | Controls (%) |
|---|---|---|---|---|
BMI | ||||
Underweight | 89 | 17.871 | 55 | 11.044 |
Normal weight | 122 | 24.497 | 341 | 68.473 |
Overweight and obese | 287 | 57.630 | 102 | 20.481 |
Occupation | ||||
Manual worker | 113 | 22.690 | 205 | 41.164 |
Mental worker | 88 | 17.995 | 145 | 29.116 |
Others | 297 | 59.638 | 148 | 29.718 |
Education | ||||
Uneducated | 301 | 60.44 | 265 | 53.212 |
Educated | 197 | 39.55 | 233 | 46.78 |
Age (years) | ||||
Mean age | 36.50 | – | 35.34 | – |
Premenopausal | 401 | 80.522 | 433 | 86.947 |
Postmenopausal | 97 | 19.477 | 65 | 13.052 |
Age at first pregnancy | ||||
21 years and below | 149 | 29.919 | 112 | 22.489 |
22–29 years | 233 | 46.787 | 256 | 51.405 |
30 and above | 166 | 33.333 | 130 | 26.104 |
Parity | ||||
Nulliparous | 91 | 18.273 | 51 | 10.240 |
1–4 | 321 | 64.457 | 395 | 79.317 |
5 and above | 86 | 17.269 | 52 | 10.441 |
History of breast feeding | ||||
None | 83 | 16.666 | 33 | 6.626 |
6 M & below | 294 | 59.036 | 271 | 54.417 |
> 6 M to 1 year | 47 | 09.437 | 55 | 11.044 |
> 1 year | 74 | 14.859 | 139 | 27.911 |
Family history of breast cancer | ||||
No | 411 | 82.530 | 309 | 82.530 |
Yes | 87 | 17.469 | 189 | 38.650 |
Parental consanguinity | ||||
Yes | 153 | 30.722 | 171 | 34.337 |
No | 345 | 69.277 | 327 | 65.662 |
Contraceptive use (6 months & above) | ||||
Yes | 401 | 80.522 | 222 | 44.578 |
No | 97 | 19.477 | 276 | 55.421 |
Systemic disease | ||||
Cardiac disease | 56 | 11.244 | 13 | 2.658 |
Liver disease | 49 | 9.839 | 21 | 4.216 |
Lung/respiratory disease | 120 | 24.09 | 42 | 8.43 |
Neurologic disease | 22 | 4.417 | 26 | 5.220 |
No | 251 | 50.401 | 396 | 79.518 |
