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Table 3 TTP reliability by important socio-demographic variables

From: Time-to-pregnancy and pregnancy outcomes in a South African population

Determinant Unadjusted odds ratio 95% CI
Race   
   White 1  
   Black 2.33 0.34, 16.18
Current age (years) 0.92 0.76, 1.11
Age at pregnancy attempt (years) 0.69 0.48, 1.01
Ever smoked   
   No 1  
   Yes 1.78 0.13, 23.52
Smoked at pregnancy attempt   
   No 1  
   Yes 3 0.25, 35.33
Alcohol at pregnancy attempt   
   No 1  
   Yes 1.67 0.27, 10.33
Education at pregnancy attempt   
   Less than High School 1  
   High School or More 0.67 0.11, 3.92
Currently working   
   No 1  
   Yes 0.96 0.16, 5.64
Pregnancy outcomes   
   Live births 1  
   Pregnancy loss 1.56 0.12, 20.85
Period of recall   
   <= 5 years 1  
   > 5 years 21.33 1.8, 251.26
Chronic disease at attempt   
   No 1  
   Yes 1.78 0.13, 23.52