Increasing prevalence of asthma and allergy in Beijing pre-school children: Is exclusive breastfeeding for more than 6 months protective?

Home environment in relation to allergic rhinitis among preschool children in Beijing, China: A cross-sectional study

“…A previous study using the present data found that breastfeeding greater than 6 months was protective against any rhinitis for girls with negative family history and against doctor-diagnosed rhinitis for girls with no family allergic history [27]. Protection for boys did not reach statistical significance [27].…”

“…A previous study using the present data found that breastfeeding greater than 6 months was protective against any rhinitis for girls with negative family history and against doctor-diagnosed rhinitis for girls with no family allergic history [27]. Protection for boys did not reach statistical significance [27]. A review study indicated that exclusive breastfeeding was protective against allergic rhinitis in 3-month-old children, regardless of family history of atopy [28].…”

“…1, gender and family allergic history were risk factors for "AR symptoms ever" (OR 1. 27 41, 4.24). Current ETS, breastfeeding less than 6 months, new furniture, condensation, cockroaches, the use of humidifier and incense were risk factors for "AR symptoms ever".…”

Ten cities cross-sectional questionnaire survey of children asthma and other allergies in China

“…The questionnaire was tested in a pilot study of 100 children in Chongqing in April 2010, and thereafter adjusted to improve readability. For details about questionnaire design, see articles for specific CCHH cities [58][59][60][61][62][63][64][65][66][67][68]. …”

China, Children, Homes, Health (CCHH)

“…From Beijing: possible protective effect of breastfeeding against asthma and allergy [18]; From Shanghai: risks associated with exposure to pets [19] and risks associated with ETS [20]; From Wuhan: risk factors in the home environment associated with asthma and rhinitis [21] and risk factors in the home environment associated with eczema [22];…”