Table 2.

Results of item analysis.

Item	Critical ratio decision value		Item-total correlation coefficient		Cronbach's α if item deleted
	CR	p	r	p
Manager support
1. I need to be assigned to a position with a light workload.	14.988	0.001	0.731	< 0.001	0.937
2. I need a flexible schedule for lactation leave.	15.548	0.001	0.757	< 0.001	0.937
3. I need the manager to grant my request for leave at her/his discretion.	1.611	0.110
4. I need the manager to understand that I express breast milk during work.	16.811	0.001	0.747	< 0.001	0.937
5. I need a good working atmosphere.	1.030	0.305
6. I need to leave work without delay.	18.112	0.001	0.778	< 0.001	0.936
7. I need to postpone the recovery time for night shift scheduling.	20.380	0.001	0.767	< 0.001	0.936
8. I need to extend my nursing leave (1 hour a day).	15.761	0.001	0.754	< 0.001	0.937
9. I need supportive psychological help from the manager (listening, explaining, advising, etc.).	−1.462	0.147
10. I hope the manager supervises my work more.	1.466	0.146
Work condition support
11. Provide me with child care day care (child care services).	0.573	0.568
12. Provide me with a quiet and secluded space for breastfeeding.	15.562	0.001	0.720	< 0.001	0.938
13. Provide me with milk storage equipment.	1.504	0.136
14. Provide me with a variety of working meals.	−1.665	0.099
15. Provide me with protective conditions that reduce bacteria and viruses.	13.009	0.001	0.672	< 0.001	0.939
16. Provide me with protective conditions that reduce radiation.	20.103	0.001	0.782	< 0.001	0.937
17. I need to train and learn after returning to work.	14.670	0.001	0.682	< 0.001	0.939
18. I needed an adjustment period after returning to work.	12.021	0.001	0.600	< 0.001	0.940
19. I need to choose my department when returning to work.	11.834	0.001	0.595	< 0.001	0.940
Colleague support
20. I need my colleagues to understand that I express breast milk during work.	14.244	0.001	0.654	< 0.001	0.939
21. I hope my colleagues to help me with my work while I am expressing breast milk.	13.630	0.001	0.678	< 0.001	0.939
22. I hope my colleagues share their parenting experiences.	14.604	0.001	0.686	< 0.001	0.938
23. I hope my colleagues to switch shifts with me when necessary.	11.590	0.001	0.594	< 0.001	0.940
24. I need supportive psychological help from colleagues (listening, explaining, advising, etc.).	−0.259	0.796

Note: The bolded values (p > 0.05) indicate nonsignificant results, suggesting no statistically significant differences were found in this analysis.