Table 2.
Socio-demographical characteristics of the Saudi breast cancer cases and controls
| Socio-demographic characteristics | Cases number (%) | Control number (%) | OR 95% confidence intervals | P -value |
|---|---|---|---|---|
| Age, years | < 0.0001 | |||
| ≤ 35 | 80 (15.0) | 201 (31.5) | 1 | |
| > 35 | 454 (85.0) | 437 (68.5) | 2.61 (1.95 – 3.49) | |
| Family History of Breast Cancer | 117 (21.9) | 72 (11.4) | 2.18 (1.58 – 2.99) | < 0.0001 |
| Family History of Cancer | 221 (41.4) | 262 (41.3) | 1.01 (0.80 – 1.27) | 0.9653 |
| Education Level | < 0.0001 | |||
| Illiterate-no schooling | 183 (36.7) | 76 (12.1) | 1 | |
| 1 – 12 years | 254 (50.9) | 264 (41.9) | 0.40 (0.29 – 0.55) | |
| > 12 years | 62 (12.4) | 290 (46.0) | 0.09 (0.06 – 0.13) | |
| Ever Married (no) | 23 (4.3) | 100 (15.7) | 0.24 (0.15 – 0.39) | < 0.0001 |
| Never Worked | 368 (74.2) | 263 (42.2) | 3.94 (3.05 – 5.09) | < 0.0001 |
| Ever Smoke (yes) | 158 (29.8) | 181 (28.8) | 1.05 (0.82 – 1.36) | 0.6995 |
| BMI, kg/m2 | ||||
| All | < 0.0001 | |||
| Lean | 129 (24.2) | 247 (38.7) | 1 | |
| Overweight | 157 (29.4) | 193 (30.3) | 1.56 (1.15 – 2.10) | |
| Obese | 248 (46.4) | 198 (31.0) | 2.40 (1.81 – 3.18) | |
| Pre-Menopause | < 0.0001 | |||
| Lean | 67 (25.4) | 201 (41.5) | 1 | |
| Overweight | 86 (32.6) | 148 (30.6) | 1.74 (1.19 – 2.56) | |
| Obese | 111 (42.1) | 135 (27.9) | 2.47 (1.70 – 3.58) | |
| Post-Menopause | 0.1191 | |||
| Lean | 60 (22.5) | 45 (30.2) | 1 | |
| Overweight | 70 (26.2) | 42 (28.2) | 1.25 (0.73 – 2.15) | |
| Obese | 137 (51.3) | 62 (41.6) | 1.66 (1.02 – 2.70) | |
Abbreviations: OR odds ratio, BMI body mass index.
Lean: BMI (18.5 - 24.9); Overweight: BMI (25 - 29.9); Obese: BMI (≥30).