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Table 3 Local level risk factors of asthma: results of multiple logistic regression analysis

From: Prevalence and risk factors of childhood allergic diseases in eight metropolitan cities in China: A multicenter study

Variables   Shanghai OR
(95% CI )
Guangzhou OR
(95% CI )
Xi'an OR
(95% CI )
Wuhan OR
(95% CI )
Chengdu OR
(95% CI )
Harbin OR
(95% CI )
Hohhot OR
(95% CI )
Urumqi OR
(95% CI )
Gender Male 15
(11-19)
23
(14-38)
      
Diagnosed GER Yes      146
(121-417)
  106
(234-485)
 
Diagnosed Obesity Yes       141
(50-401)
79
(17-358)
77
(22-272)
Carbonated drinks intake > = 5 times/week      53
(12-67)
   
Maternal diagnosed depression Yes     55
(14-114)
    
Diagnosed prepartum and postpartum depression Yes 24
(12-49)
       
Family structure Single-parent and extended family (Ref.)         
  Nuclear family      32
(18-85)
   
Household income per capita > = 1500RMB/month   22
(11-17)
  14
(11-36)
    
Maternal education level > = High school graduate 15
(12-20)
18
(11-30)
      
Paternal education level > = High school graduate      28
(18-45)
   
Maternal education level *Household income per capita > = High school graduate and > = 1500RMB/month   1.6
(1.0,2.7)
      
Paternal education level *Household income per capita > = High school graduate and > = 1500RMB/month     2.3
(1.2,4.6)
    
Common cold >5 times/year 26
(19-33)
38
(23-61)
71
(26-192)
58
(37-123)
27
(18-42)
39
(20-78)
  30
(13-67)
Sleep-disordered breathing Yes 19
(11-34)
    39
(18-85)
  53
(16-171)
41
(15-114)
Maternal snoring Yes         33
(12-87)
Paternal age at child's birth   10
(10-11)
       
Diagnosed allergic rhinitis Yes 53
(40-69)
44
(27-71)
  46
(30-104)
57
(37-89)
38
(16-91)
54
(18-162)
28
(11-68)
Diagnosed eczema Yes 32
(22-45)
29
(15-56)
  24
(11-52)
24
(12-47)
41
(18-92)
  31
(11-82)
  1. Values highlighted in bold indicate OR within 95% CI and statistically significant at P < 0∙05.