Table 1.
Calculation of Content Validity Ratio (CVR) and S-CVI for items of Perception of Labor Pain Questionnaire (PLPQ) after expert judgment
| Items | S-CVI | CVR |
|---|---|---|
| 1. I was ready to experience the pain of normal delivery | 1 | 0.72 |
| 2. God has given me the power to do normal delivery | 0.79 | 0.86 |
| 3. I had enough information about normal delivery and problems | 0.8 | 0.72 |
| 4. I accepted pain as a natural part of normal delivery | 1 | 1 |
| 5. To maintain my health and my baby, I tended to experience normal delivery | 0.8 | 1 |
| 6. Labor pain becomes more intense | 0.86 | 0.57 |
| 7. I felt dying with the pain of labor | 0.86 | 0.57 |
| 8.I screamed during labor pain | 1 | 0.57 |
| 9. I cried during labor pain | 0.86 | 0.72 |
| 10. During labor pain, I wanted to grab everything | 0.8 | 0.57 |
| 11. I was asking for help from my caregivers during pain | 0.79 | 0.72 |
| 12. I like caesarean section because of sever of pain | 0.79 | 0.57 |
| 13. The severity of my labor pain was less than I had heard | 1 | 0.72 |
| 14. The labor pain was painful but sweet | 0.86 | 0.57 |
| 15. With the onset of my childbirth symptoms, my stress was increased | 1 | 0.57 |
| 16. I was worried that I could not tolerate the pain of normal delivery | 0.93 | 0.72 |
| 17. I was worried that I would do wrong behavior during pain | 0.79 | 0.57 |
| 18. I was sad more during the pain of my words and behaviors of my caregivers. | 1 | 0.57 |
| 19. I was very afraid of the vaginal exam. | 1 | 0.86 |
| 20. I was sad by the unfavorable conditions of the delivery room | 0.79 | 0.72 |
| 21. It was uncomfortable for me to stay in bed when I was giving birth Continuously | 1 | 0.57 |
| 22. I was sad because of Caregiver’s disregard to my desires and needs | 1 | 0.72 |
| 23. I worried that the medicine team did not know how to treat their work well | 0.86 | 0.72 |
| 24. The availability of care equipment, such as the heart rate monitor, could have made my calm and safe | 0.79 | 0.72 |
| 25. The experience of normal delivery is like getting into another stage of life | 0.8 | 0.57 |
| 26. The experience of natural labor pain means better understanding of the mother’s position | 0.8 | 1 |
| 27. I felt empathy and power with the experience of the natural labor pain | 0.86 | 0.72 |
| 28. I felt proud and victorious with the experience of natural labor pain | 0.8 | 0.72 |
| 29. Self-sacrifice and sacrifice were created in me with the experience of natural labor pain. | 0.8 | 0.57 |
| 30. The experience of natural labor pain led to the belief in God and his help. | 0.8 | 0.86 |
| 31. Purity was created in me with the experience of natural labor pain | 0.86 | 0.72 |