Table 1

Distribution of cases and controls participated in the study in Southern Iran according to selected variables by parity
Parity
Nulliparous 1-3 4-6 7+
Cases Controls Cases Controls Cases Controls Cases Controls
(n = 38) (n = 12) (n = 130) (n = 76) (n = 227) (n = 197) (n = 98) (n = 208)
n (%) n (%) n (%) n (%) n (%) n (%) n (%) n (%)
Age at menarche (years)
 < 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
 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
 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)
 <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
 <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)

Ghiasvand et al.

Ghiasvand et al. BMC Cancer 2012 12:414   doi:10.1186/1471-2407-12-414

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