Related factors of gender of birth population in Tongliao city,Inner Mongolia

Objective To explore the related factors of gender of birth population in Tongliao city,Inner Mongolia.Methods We used cluster sampling method to sample the subjects from city,town and village,respectively.A total of 3 051 children who were born between Jan 1st,2006 to Nov 30st,2008 and their parents were investigated.A cross-sectional questionnaire survey was conducted to collect data with face-to-face interview.Results The concept of children bearing showed difference between the boy group and the girl group(P<0.001).Fathers and mothers of the boy group had the concept of boy preference with the percentages of 28.7% and 19.2%,respectively.The percentages of boy preference for fathers and mothers of the girl group were 14.4% and 22.8%,respectively.The concept of children bearing was different between the residents of city,town and village(P<0.001).Fathers and mothers in town and village were more prone to have a boy.The proportion of concept of boy preference in fathers of rural,town,and city was 28.0%,12.8% and 9.6%,respectively.The proportion of concept of boy preference in mothers of the rural,town,and city was 28.9%,30.8%,and 17.5%,resopectively.The results of logistic regression showed that the concept of boy preference in father was related to birth of boy (odds ratioOR=1.21),and concept of boy preference in mother was also related to birth of boy(OR=1.28).Conclusion The concept of boy preference in father and mother is related with birth of boy in Tongliao city,Inner Mongolia.