Table 2.

Crude and adjusted ORs for hand, foot and mouth disease related to exclusive breastfeeding

	OR (95%CI)
	Crude	P value	Adjusted*	P value
Overall	0.60 (0.45-0.79)	0.001	0.63 (0.47-0.85)	0.002
Sex
Males	0.61 (0.43-0.87)	0.01	0.65 (0.44-0.95)	0.03
Females	0.59 (0.38-0.93)	0.02	0.54 (0.33-0.89)	0.02
Age
< 6 m	0.25 (0.01-1.88)	0.23	0.31 (0.01-3.39)	0.38
6-12 m	0.58 (0.26-1.06)	0.08	0.45 (0.22-0.90)	0.03
13-18 m	0.59 (0.28-1.03)	0.06	0.61 (0.24-0.99)	0.04
19-24 m	0.47 (0.25-0.87)	0.02	0.38 (0.18-0.77)	0.01
25-28 m&	0.41 (0.18-0.92)	0.03	0.41 (0.18-0.92)	0.03
29-48 m	1.10 (0.59-2.00)	0.78	1.19 (0.62-2.30)	0.60

*In multivariate logistic regression model, we controlled for age, hand washing habit before dinner, whether the children have played in outdoor playgrounds, household environment, etc. & Our initial analysis used 6 month interval for the age group-specific analysis, we found the group of 25–30 months was not statistically significant, in order to check whether month was the cut-off point, we further examined the association for each month within this age group, and found it was not significant after 28 months.