Characteristic (n = 1533) | Cows’ milk (n = 758) | Placebo (n = 775) |
---|---|---|
Sex | ||
Female (n = 753) | 48 (365) | 50 (388) |
Male (n = 780) | 52 (393) | 50 (387) |
Place of delivery | ||
At home (n = 717) | 48 (363) | 46 (354) |
Hospital (n = 816) | 52 (395) | 54 (421) |
Mother’s age at birth (years) | ||
< 25 (n = 129) | 8 (60) | 9 (69) |
25–29 (n = 654) | 42 (321) | 43 (333) |
30–34 (n = 596) | 40 (302) | 38 (294) |
⩾ 35 (n = 154) | 10 (75) | 10 (79) |
Maternal education 1-150 | ||
Low (n = 203) | 13 (100) | 13 (103) |
Middle (n = 614) | 40 (304) | 40 (310) |
High (n = 714) | 47 (353) | 47 (361) |
Unknown (n = 2) | 0 (1) | 0 (1) |
Number of siblings1-151 | ||
0 (n = 757) | 48 (365) | 51 (392) |
1 (n = 509) | 35 (263) | 32 (246) |
2 (n = 186) | 13 (96) | 12 (90) |
⩾ 3 (n = 51) | 3 (20) | 4 (31) |
Unknown, not 0 (n = 30) | 2 (14) | 2 (16) |
Family risk of atopy | ||
High (n = 880) | 58 (437) | 57 (443) |
Low (n = 653) | 42 (321) | 43 (332) |
Pets at home | ||
No (n = 623) | 43 (323) | 39 (300) |
Yes (n = 910) | 57 (435) | 61 (475) |
Mother smoked during pregnancy | ||
No (n = 1218) | 79 (601) | 80 (617) |
Yes (n = 295) | 20 (150) | 19 (145) |
Unknown (n = 20) | 1 (7) | 2 (13) |