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Table 4 Item-rest correlations and total Cronbach’s alpha for 15- and nine-item versions at two and six months

From: Maternal confidence after birth in at-risk and not-at-risk mothers: internal and external validity of the Danish version of the Karitane Parenting Confidence Scale (KPCS)

Item 2 months 6 months
Item-rest correlation Item-rest correlation
15 items 9 items 15 items 9 items
1. Feeding baby 0.21 0.17
2. Settling baby 0.39 0.39
3. Establishing good sleep routine 0.49 0.49 0.41 0.39
4. Knowing what to do when baby cries 0.57 0.56 0.38 0.38
5. Understanding baby’s signals 0.51 0.53 0.47 0.46
6. Soothing baby when distressed 0.48 0.46 0.37 0.32
7. Playing with baby 0.37 0.35 0.38 0.38
8. Handling cold or minor illness 0.37 0.36 0.34 0.35
9. Confidence in support from partner 0.18 0.19
10. Baby is doing well 0.49 0.47 0.34 0.32
11. Making decisions about care of baby 0.36 0.24
12. Being a mother/father is very stressful 0.47 0.46 0.37 0.37
13. Feel doing a good job as mother/father 0.57 0.56 0.49 0.47
14. Other people believe doing a good job 0.29 0.31
15. Feel sure about support from others 0.23 0.33
Alpha 0.79 0.79 0.76 0.72