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Table 8 Principal component analysis of LMUP

From: Proportion of unplanned pregnancies, their determinants and health outcomes of women delivering at a teaching hospital in Sri Lanka

Items Missing data Corrected Item total correlation Cronbach’s alpha Cronbach’s alpha if item deleted Component loadings
Sri Lankan Sinhalese    0.936   Eigenvalues-4.643
1 (Contraception) 2 (0.4%) .602   .947 .967
2 (Timing) 6 (1.3%) .907   .912 .946
3 (Desire for motherhood) 9 (2%) .909   .911 .946
4 (Desire of baby) 11 (2.4%) .931   .909 .961
5 (Partner discussion) 8 (1.7%) .931   .909 .959
6 (Preparation) 7 (1.0%) .635   .950 .723