Table 1 Distribution of cases and controls participated in the study in Southern Iran according to selected variables by parity
From: Postmenopausal breast cancer in Iran; risk factors and their population attributable fractions
| Â | Parity | |||||||
|---|---|---|---|---|---|---|---|---|
| Â | Nulliparous | 1-3 | 4-6 | 7+ | ||||
| Â | Cases | Controls | Cases | Controls | Cases | Controls | Cases | Controls |
|  | (n = 38) | (n = 12) | (n = 130) | (n = 76) | (n = 227) | (n = 197) | (n = 98) | (n = 208) |
| Â | n (%) | n (%) | n (%) | n (%) | n (%) | n (%) | n (%) | n (%) |
Age at menarche (years) | Â | Â | Â | Â | Â | Â | Â | |
 < 12 | 7 (18) | 0 (0) | 15 (12) | 6 (8) | 17 (7) | 5 (2) | 3 (3) | 14 (7) |
 12 – 15 | 26 (69) | 11 (92) | 98 (75) | 66 (87) | 188 (83) | 169 (86) | 83 (85) | 179 (86) |
 >15 | 5 (13) | 1 (8) | 17 (13) | 4 (5) | 22 (10) | 23 (12) | 12 (12) | 15 (7) |
Education | Â | Â | Â | Â | Â | Â | Â | Â |
 None | 15 (39) | 6 (50) | 24 (19) | 23 (30) | 71 (31) | 99 (50) | 69 (70) | 164 (79) |
 Elementary | 6 (16) | 2 (17) | 21 (16) | 12 (16) | 102 (45) | 69 (35) | 26 (27) | 40 (19) |
 High school | 5 (13) | 4 (33) | 56 (43) | 27 (36) | 44 (20) | 27 (14) | 3 (3) | 4 (2) |
 University | 12 (32) | 0 (0) | 29 (22) | 14 (18) | 10 (4) | 2 (1) | 0 (0) | 0 (0) |
Occupation | Â | Â | Â | Â | Â | Â | Â | Â |
 Housewife | 20 (53) | 10 (83) | 72 (55) | 54 (71) | 202 (89) | 192 (97) | 97(99) | 206 (99) |
 Employed | 18 (47) | 2 (17) | 58 (45) | 22 (29) | 25 (11) | 5 (3) | 1 (1) | 2 (1) |
Height (cm) | Â | Â | Â | Â | Â | Â | Â | Â |
 <152 | 11 (29) | 8 (67) | 40 (31) | 16 (21) | 56 (25) | 49 (25) | 36 (37) | 59 (28) |
 152 – 156 | 14 (37) | 2 (17) | 36 (28) | 18 (24) | 85 (37) | 49 (25) | 25 (26) | 53 (26) |
 157 – 160 | 7 (18) | 1 (8) | 25 (19) | 25 (33) | 43 (19) | 67 (34) | 15 (15) | 70 (34) |
 >160 | 4 (11) | 1 (8) | 24 (18) | 17 (22) | 39 (17) | 32 (16) | 18 (18) | 26 (12) |
 Missing | 2 (5) | 0 (0) | 5 (4) | 0 (0) | 4 (2) | 0 (0) | 4 (4) | 0 (0) |
BMI | Â | Â | Â | Â | Â | Â | Â | Â |
 <18.5 | 0 (0) | 0 (0) | 0 (0) | 2 (3) | 1 (0) | 5 (3) | 3 (3) | 7 (3) |
 18.5 – 24.9 | 11 (29) | 5 (42) | 37 (28) | 22 (29) | 50 (22) | 69 (35) | 27 (28) | 77 (34) |
 25 – 29.9 | 19 (50) | 7 (58) | 52 (40) | 30 (39) | 97 (43) | 77 (39) | 40 (41) | 79 (38) |
 ≥30 | 6 (16) | 0 (0) | 36 (28) | 22 (29) | 75 (33) | 46 (23) | 24 (24) | 51 (25) |
 Missing | 2 (5) | 0 (0) | 5 (4) | 0 (0) | 4 (2) | 0 (0) | 4 (4) | 0 (0) |