Table 2. OR of BC for anthropometric factors.
|
Pre-menopausal
|
Post-menopausal
|
|||
|---|---|---|---|---|
| Factors | Case/control (898/1182) | OR (95% CI) | Case/control (968/691) | OR (95% CI) |
| Height (in cm) a | ||||
| <160 | 734/991 | 1.00 — | 829/634 | 1.00 — |
| ⩾160 | 147/182 | 1.05 (0.81–1.38) | 103/48 | 1.61 (1.08–2.42) |
| Unknown | 17/9 | 1.39 (0.41–4.76) | 36/9 | 1.04 (0.32–3.35) |
| Height (in cm) (urban) b | ||||
| <160 | 251/294 | 1.00 — | 341/252 | 1.00 — |
| ⩾160 | 52/54 | 1.03 (0.62–1.69) | 44/20 | 1.89 (0.97–3.67) |
| Unknown | 13/7 | 1.26 (0.22–7.24) | 34/4 | 1.45 (0.33–6.36) |
| Height (in cm) (rural) c | ||||
| <160 | 483/697 | 1.00 — | 488/382 | 1.00 — |
| ⩾160 | 95/128 | 1.05 (0.76–1.46) | 59/28 | 1.52 (0.90–2.57) |
| Unknown | 4/2 | 2.37 (0.34–16.61) | 2/5 | 0.41 (0.03–4.94) |
| BMI (kg/m2)a | ||||
| <25 | 560/845 | 1.00 — | 559/450 | 1.00 — |
| 25–29.9 | 256/268 | 1.33 (1.05–1.69) | 297/185 | 1.29 (1.00–1.66) |
| ⩾30 | 65/60 | 1.56 (1.03–2.35) | 76/47 | 1.00 (0.64–1.54) |
| Unknown | 17/9 | 1.58 (0.46–5.42) | 36/9 | 1.07 (0.33–3.45) |
| BMI (kg/m 2 ) (urban) b | ||||
| <25 | 175/207 | 1.00 — | 192/158 | 1.00 — |
| 25–29.9 | 98/109 | 0.99 (0.65–1.51) | 142/86 | 1.32 (0.89–1.97) |
| ⩾30 | 30/32 | 1.19 (0.64–2.24) | 51/28 | 0.89 (0.49–1.62) |
| Unknown | 13/7 | 1.30 (0.26–7.56) | 34/4 | 1.47 (0.33–6.49) |
| BMI (kg/m 2 ) (rural) c | ||||
| <25 | 385/638 | 1.00 — | 367/292 | 1.00 — |
| 25–29.9 | 158/159 | 1.56 (1.17–2.09) | 155/99 | 1.30 (0.92–1.83) |
| ⩾30 | 35/28 | 1.97 (1.12–3.49) | 25/19 | 1.15 (0.58–2.28) |
| Unknown | 4/2 | 2/5 | 0.42 (0.03–5.16) | |
| Waist size (in cm) b | ||||
| ⩽85 | 631/918 | 1.00 — | 557/486 | 1.00 — |
| >85 | 250/254 | 1.24 (0.96–1.62) | 380/199 | 1.61 (1.22–2.12) |
| Unknown | 17/10 | 1.19 (0.37–3.90) | 31/6 | 2.88 (0.76–10.90) |
| Waist size (in cm) (urban) b | ||||
| ⩽85 | 208/235 | 1.00 — | 213/185 | 1.00 — |
| >85 | 96/113 | 0.97 (0.61–1.54) | 178/89 | 1.71 (1.12–2.61) |
| Unknown | 12/7 | 1.25 (0.20–7.83) | 28/2 | 5.90 (0.92–37.96) |
| Waist size (in cm) (rural) c | ||||
| ⩽85 | 423/683 | 1.00 — | 344/301 | 1.00 — |
| >85 | 154/141 | 1.43 (1.03–1.99) | 202/110 | 1.54 (1.06–2.23) |
| Unknown | 5/13 | 1.34 (0.25–7.17) | 3/4 | 1.65 (0.13–21.77) |
| Hip size (in cm) a | ||||
| ⩽100 | 723/1037 | 1.00 — | 673/584 | 1.00 — |
| >100 | 157/135 | 1.47 (1.05–2.06) | 264/101 | 2.42 (1.72–3.41) |
| Unknown | 18/10 | 1.47 (0.47–4.60) | 31/6 | 3.46 (0.89–13.35) |
| Hip size (in cm) (urban) b | ||||
| ⩽100 | 230/278 | 1.00 — | 242/218 | 1.00 — |
| >100 | 73/70 | 1.49 (0.89–2.51) | 149/56 | 2.65 (1.60–4.37) |
| Unknown | 13/7 | 2.16 (0.40–11.76) | 28/2 | 6.85 (1.04–45.06) |
| Hip size (in cm) (rural) c | ||||
| ⩽100 | 493/759 | 1.00 — | 431/366 | 1.00 — |
| >100 | 84/65 | 1.48 (0.94–2.34) | 115/45 | 2.34 (1.44–3.82) |
| Unknown | 5/3 | 1.34 (0.25–7.16) | 3/4 | 2.03 (0.15–28.09) |
| WHR a | ||||
| ⩽0.85 | 295/398 | 1.00 — | 261/159 | 1.00 — |
| >0.85 | 585/774 | 0.92 (0.74–1.13) | 676/526 | 0.74 (0.57–0.97) |
| Unknown | 18/10 | 1.27 (0.40–3.98) | 31/6 | 1.95 (0.51–7.48) |
| Waist-to-hip ratio (urban) b | ||||
| ⩽0.85 | 109/124 | 1.00 — | 123/70 | 1.00 — |
| >0.85 | 194/224 | 0.85 (0.58–1.26) | 268/204 | 0.75 (0.50–1.13) |
| Unknown | 13/7 | 1.60 (0.29–8.69) | 28/2 | 4.10 (0.63–26.83) |
| Waist-to-hip ratio (rural) c | ||||
| ⩽0.85 | 186/274 | 1.00 — | 138/89 | 1.00 — |
| >0.85 | 391/550 | 0.93 (0.71–1.20) | 408/322 | 0.71 (0.50–1.01) |
| Unknown | 5/3 | 1.25 (0.23–6.76) | 3/4 | 0.88 (0.08–12.22) |
| Body size at 10 years a | ||||
| Figure 1 | 329/490 | 1.00 — | 329/236 | 1.00 — |
| Figure 2 | 453/572 | 1.12 (0.90–1.38) | 488/385 | 0.82 (0.64–1.05) |
| Figure 3 | 76/88 | 1.13 (0.77–1.67) | 110/51 | 1.26 (0.83–1.92) |
| Figures 4–9 | 40/32 | 1.75 (1.01–3.03) | 41/19 | 1.26 (0.67–2.40) |
| Body size at 10 years (urban) b | ||||
| Figure 1 | 107/109 | 1.00 — | 105/73 | 1.00 — |
| Figure 2 | 171/196 | 0.90 (0.59–1.37) | 242/165 | 0.82 (0.53–1.27) |
| Figure 3 | 26/42 | 0.62 (0.31–1.22) | 50/30 | 0.83 (0.43–1.60) |
| Figures 4–9 | 12/8 | 1.73 (0.58–5.12) | 22/8 | 1.50 (0.53–4.23) |
| Body size at 10 years (rural) c | ||||
| Figure 1 | 222/381 | 1.00 — | 224/163 | 1.00 — |
| Figure 2 | 282/376 | 1.20 (0.93–1.54) | 246/220 | 0.78 (0.57–1.07) |
| Figure 3 | 50/46 | 1.45 (0.89–2.37) | 60/21 | 1.91 (1.04–3.49) |
| Figures 4–9 | 28/24 | 1.84 (0.96–3.53) | 19/11 | 1.14 (0.48–2.73) |
| Body size at 20 years a | ||||
| Figures 1+2 | 281/419 | 1.00 — | 276/203 | — |
| Figure 3 | 424/558 | 1.00 (0.80–1.25) | 424/348 | 0.82 (0.63–1.06) |
| Figures 4–9 | 193/205 | 1.16 (0.87–1.54) | 268/140 | 1.23 (0.90–1.70) |
| Body size at 20 years (urban) b | ||||
| Figures 1+2 | 91/97 | — | 98/74 | 1.00 — |
| Figure 3 | 157/175 | 0.80 (0.51–1.24) | 176/124 | 0.89 (0.56–1.41) |
| Figures 4–9 | 68/83 | 0.70 (0.41–1.20) | 145/78 | 1.05 (0.64–1.72) |
| Body size at 20 years (rural) c | ||||
| Figures 1+2 | 190/322 | — | 178/129 | 1.00 — |
| Figure 3 | 267/383 | 1.06 (0.81–1.38) | 248/224 | 0.77 (0.55–1.08) |
| Figures 4–9 | 125/122 | 1.42 (1.01–2.00) | 123/62 | 1.43 (0.92–2.22) |
| Current body size a | ||||
| Figures 1+2+3 | 153/227 | 1.00 — | 163/156 | 1.00 — |
| Figures 4–9 | 745/955 | 0.90 (0.64–1.25) | 805/535 | 1.29 (0.92–1.90) |
| Current body size (urban) b | ||||
| Figures 1+2+3 | 82/107 | 1.00 — | 97/90 | 1.00 — |
| Figures 4–9 | 234/248 | 0.79 (0.48–1.29) | 322/186 | 1.55 (0.97–2.48) |
| Current body size (rural) c | ||||
| Figures 1+2+3 | 71/120 | 1.00 — | 66/66 | 1.00 — |
| Figures 4–9 | 511/707 | 1.07 (0.66–1.73) | 483/349 | 1.18 (0.70–1.98) |
BC=breast cancer; BMI=body mass index; CI=confidence interval; OR=odds ratio; WHR=waist-to-hip ratio.
a
Adjusted for age, centre, religion, marital status, education, socioeconomic status, residence status, parity, age at 1st childbirth and duration of breast feeding, physical activity and variables in the table (where appropriate).
b
Only urban, adjusted for age, centre, religion, marital status, education, socioeconomic status, parity, age at 1st childbirth and duration of breast feeding, physical activity and variables in the table (where appropriate).
c
Only rural, adjusted for age, centre, religion, marital status, education, socioeconomic status, parity, age at 1st childbirth and duration of breast feeding, physical activity and variables in the table (where appropriate).