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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.