Table 2 The scale item screening results of critical ratio, correlation coefficient, CITC, and CAID

Self-

management

1. I feel that I can cope well with the postpartum recovery process.

10.690

< 0.001

0.556

< 0.001

0.525

0.980

2. I feel that I can cope well with taking care of my baby.

13.641

< 0.001

0.566

< 0.001

0.534

0.980

3. I feel that I can schedule a postpartum follow-up visit to the health facility.

13.809

< 0.001

0.678

< 0.001

0.653

0.979

Social support

4. I feel that I can timely get access to help and support when I have my own health problems.

15.963

< 0.001

0.764

< 0.001

0.745

0.979

5. I feel that I can timely get access to help and support when I have problems with taking care of my baby.

14.171

< 0.001

0.733

< 0.001

0.711

0.979

6. I feel that my family cares for me.

11.942

< 0.001

0.725

< 0.001

0.707

0.979

7. I feel that my family cares for my baby.

9.786

< 0.001

0.666

< 0.001

0.647

0.979

8. I feel that the experiences of other mothers have provided a lot of help and support for me.

13.843

< 0.001

0.767

< 0.001

0.750

0.979

Facility- and community-

based care

9. I feel that the medical staff in the hospital have maintained good service attitudes towards me.

15.452

< 0.001

0.841

< 0.001

0.830

0.978

10. I feel that the postnatal care provided by the hospital can adequately meet my health needs.

15.661

< 0.001

0.789

< 0.001

0.771

0.978

11. I feel that the medical staff in the hospital have sufficient time to answer my questions.

16.904

< 0.001

0.818

< 0.001

0.803

0.978

12. I feel that the medical staff have carefully assessed my health status during hospitalization.

16.686

< 0.001

0.859

< 0.001

0.848

0.978

13. I feel that the medical staff have carefully assessed my baby’s health status during hospitalization.

17.133

< 0.001

0.865

< 0.001

0.854

0.978

14. I feel that the medical staff in the hospital have provided me with adequate information and guidance on postnatal physical and mental health care.

17.988

< 0.001

0.831

< 0.001

0.817

0.978

15. I feel that the medical staff in the hospital have provided me with adequate information and guidance on newborn care.

18.654

< 0.001

0.870

< 0.001

0.859

0.978

16. I feel that the medical staff in the hospital are very skilled.

15.809

< 0.001

0.847

< 0.001

0.836

0.978

17. I feel that the postnatal health visitor has maintained good service attitudes towards me.

17.314

< 0.001

0.841

< 0.001

0.829

0.978

18. I feel that the postnatal health visitor has carefully assessed my health status.

13.735

< 0.001

0.641

< 0.001

0.612

0.979

19. I feel that the postnatal health visitor has carefully assessed my baby’s health status.

14.782

< 0.001

0.782

< 0.001

0.765

0.979

20. I feel that the postnatal health visitor has provided me with adequate information and guidance on postnatal physical and mental health care.

12.593

< 0.001

0.738

< 0.001

0.717

0.979

21. I feel that the postnatal health visitor has provided me with adequate information and guidance on newborn care.

16.929

< 0.001

0.781

< 0.001

0.763

0.979

22. I feel that the postnatal health visitor is very skilled.

17.065

< 0.001

0.779

< 0.001

0.762

0.979

23. I feel that the postnatal health visitor has sufficient time to answer my questions.

19.700

< 0.001

0.855

< 0.001

0.842

0.978

24. I feel that the medical staff have carefully assessed my health status at the postnatal clinic.

19.667

< 0.001

0.906

< 0.001

0.898

0.978

25. I feel that the medical staff have carefully assessed my baby’s health status at the postnatal clinic.

17.262

< 0.001

0.912

< 0.001

0.905

0.978

26. I feel that the medical staff have provided adequate feedback or referral suggestion on my health examination results.

19.451

< 0.001

0.906

< 0.001

0.898

0.978

27. I feel that the medical staff have provided adequate feedback or referral suggestion on my baby’s health examination results.

18.946

< 0.001

0.913

< 0.001

0.905

0.978

28. I feel that the maternal and infant support facilities in the hospital can meet my needs for lactation and diaper change.

15.101

< 0.001

0.810

< 0.001

0.793

0.978

29. I feel that the hospital has provided me with convenient services.

16.485

< 0.001

0.880

< 0.001

0.870

0.978

30. I feel that the postnatal care provided by the community health center can fully meet my health needs.

17.644

< 0.001

0.864

< 0.001

0.852

0.978