Table 2 Results of univariate and multivariate logistics regression analyses between childhood allergy and independent variables

Sex(girls)

 Boys

1.50 (1.34,1.68)

1.53 (1.36,1.72)

1.52 (1.39,1.67)

1.62 (1.46,1.78)

1.15 (1.04,1.28)

1.17 (1.05,1.30)

1.13 (0.98,1.30)

1.13 (0.98,1.31)

1.23 (1.02,1.48)

1.23 (1.02,1.48)

 Age

0.98 (0.94,1.02)

0.99 (0.95,1.02)

1.02 (0.99,1.05)

1.03 (1.00,1.07)

0.96 (0.93,1.00)

0.97 (0.93,1.00)

0.97 (0.92,1.01)

0.98 (0.93,1.03)

1.09 (1.02,1.16)

1.09 (1.03,1.17)

Home ownership (Not have)

 Have

1.60 (1.40,1.84)

1.27 (1.09,1.47)

2.33 (2.06,2.63)

1.76 (1.54,2.01)

2.03 (1.76,2.34)

1.68 (1.45,1.95)

1.71 (1.42,2.05)

1.31 (1.08,1.59)

1.63 (1.29,2.07)

1.22 (0.95,1.57)

Mode of delivery (VD)

 CS

1.24 (1.11,1.39)

1.12 (0.99,1.26)

1.20 (1.09,1.32)

1.00 (0.91,1.11)

1.24 (1.11,1.39)

1.12 (1.00,1.25)

1.21 (1.05,1.40)

1.10 (0.95,1.28)

1.18 (0.97,1.42)

1.02 (0.84,1.24)

Breastfeeding duration (≤ 6 m)

  > 6 m

0.78 (0.69,0.87)

0.84 (0.75,0.95)

0.69 (0.63,0.76)

0.77 (0.70,0.85)

0.87 (0.78,0.96)

0.97 (0.87,1.08)

0.90 (0.78,1.03)

0.99 (0.86,1.15)

0.74 (0.61,0.89)

0.82 (0.68,0.99)

Only child (No)

 Yes

1.34 (1.19,1.51)

1.16 (1.03,1.32)

1.66 (1.50,1.83)

1.37 (1.23,1.53)

1.41 (1.26,1.59)

1.19 (1.05,1.34)

1.40 (1.21,1.63)

1.22 (1.04,1.43)

1.65 (1.34,2.02)

1.46 (1.18,1.80)

Family historyof allergy (No)

 Yes

3.12 (2.78,3.50)

2.99 (2.65,3.36)

4.25 (3.85,4.70)

4.02 (3.63,4.45)

2.56 (2.29,2.87)

2.37 (2.12,2.66)

3.49 (3.02,4.03)

3.32 (2.87,3.83)

2.60 (2.16,3.13)

2.49 (2.06,3.01)