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Table 2 Unadjusted and adjusted lognormal models estimating the effects of child birth weight on timing of the BCG vaccination

From: Effects of low birth weight on time to BCG vaccination in an urban poor settlement in Nairobi, Kenya: an observational cohort study

  Model 1 Model 2
Unadjusted Adjusted
Time ratio 95% CI Overall P-value Time ratio 95% CI Overall P-value
Child’s birth weight (ref: NBW (weight > =2500 grams))       
 2000-2499 grams 1.22 [0.98,1.51] <0.0001 1.44 [1.15,1.82] <0.0001
 <2000 grams 7.73 [5.52,10.82]   8.97 [6.01,13.39]  
Settlement area (ref: Korogocho)       
 Viwandani     0.91 [0.82,1.01] 0.079
Ethnic group (ref: Kikuyu)       
 Luhya     1.16 [1.02,1.32] <0.0001
 Luo     1.22 [1.07,1.40]  
 Kamba     1.27 [1.11,1.44]  
 Others     1.31 [1.14,1.51]  
Mother’s level of education (incomplete primary)       
 Completed primary     0.91 [0.81,1.02] 0.1773
 Secondary+     0.90 [0.80,1.02]  
Pregnancy wanted ness (ref: wanted now)       
 Wanted later     1.05 [0.95,1.16] 0.1492
 Not at all     1.16 [0.99,1.35]  
Child’s gender (ref: male)       
 Female     0.95 [0.87,1.03] 0.221
Type of facility (ref: private HF)       
 Public HF     0.48 [0.44,0.53] <0.0001
N 3602 3185
  1. Estimates of a significance p < 0.05 are in bold writing.