Primary outcomes | Measurements |
---|---|
1. Pain intensity | Visual analogue scale (VAS) |
2. Satisfaction with pain relief | American Pain Society – Patient Outcome Questionnaire–Modified (APS-POQ Modified) |
3. Sense of control in labour | 29-item Chinese validated Labour Agentry Scale (c-LAS) |
4. Satisfaction with childbirth experience | Six Simple Questions (SSQ) |