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Table 1 Sociodemographic characteristics of the cases and controls

From: A discriminant analysis prediction model of non-syndromic cleft lip with or without cleft palate based on risk factors

Characteristics Controls
(n = 226)
Cases
(n = 113)
χ 2 P ORa 95 % CIb (OR)
Maternal age (years), n (%)    0.983 0.805    
 20–24 74 (32.7) 43 (38.1)    1   
 25–29 96 (42.5) 45 (39.8)    0.807 0.481 1.352
 30–34 51 (22.6) 23 (20.4)    0.776 0.418 1.442
 ≥ 35 5 (2.2) 2 (1.8)    0.688 0.128 3.702
Maternal education level, n (%)    6.460 0.033*    
 Primary school and below 10 (4.4) 13 (11.5)    1.650 0.760 3.582
 Middle school 160 (70.8) 79 (69.9)    4.673 1.476 14.795
 College and above 56 (24.8) 21 (18.6)    1   
Maternal occupation, n (%)    6.708 0.243    
 Farmer 88 (38.9) 39 (34.5)    1.723 0.756 3.928
 Migrant worker 18 (8.0) 15 (13.3)    3.241 1.189 8.836
 Business/company staff 35 (15.5) 9 (8.0)    1   
 Worker 16 (7.1) 9 (8.0)    2.187 0.730 6.552
 Staff in administrative institutions 22 (9.7) 13 (11.5)    2.298 0.843 6.267
 House wife or else 47 (20.8) 28 (24.8)    2.317 0.971 5.526
  1. aOR denotes odds ratio; bCI denotes confidence interval; *P < 0.05