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Table 3 Forward stepwise logistic regression model on factors related to ‘not planned’ pregnancy (first time pregnant teenagers N = 409)

From: A quantitative exploration of the sociocultural context of teenage pregnancy in Sri Lanka

   B S.E. p OR 95.0% C.I. for OR
Lower Upper
Step 1a Not happy as a teen .868 .239 .000 2.38 1.49 3.81
Constant -.805 .122 .000 .45   
Step 2b Intercourse not wanted 1.181 .401 .003 3.26 1.49 7.14
Not happy as a teen .841 .242 .001 2.32 1.44 3.76
Constant -.890 .127 .000 .41   
Step 3c,d Ethnicity    .009    
Tamil -.222 .335 .508 .80 0.415 1.55
Moor −1.317 .434 .002 .27 0.11 0.63
Intercourse not wanted 1.259 .415 .002 3.52 1.56 7.94
Not happy as a teen .820 .249 .001 2.27 1.39 3.69
Constant -.742 .136 .000 .48   
  1. aVariable(s) entered in step 1: Teen happiness. Base line: Very happy as a teen.
  2. bVariable(s) entered in step 2: Attitude to first intercourse. Base line: first intercourse wanted.
  3. cVariable(s) entered in step 3: Ethnicity. Baseline: Sinhalese.
  4. dHosmer and Lemeshow goodness-of-fit test, p = 0.993. Nagelkerke’s R2 = 0.109.