Table 1 Mean item response rates by questionnaire and by region.
From: Validation of a survey methodology for gastroesophageal reflux disease in China
| Â | Mean item response rates | |||
|---|---|---|---|---|
Region | RDQ | GERD Impact Scale | QOLRAD | SF-36 |
Urban (n = 359) | 98.35–98.62% | 98.07–98.35% | 96.97–100% | 98.07–99.45% |
Suburban (n = 224) | 100–100% | 100–100% | 100–100% | 98.21–100% |
Rural (n = 336) | 100–100% | 100–100% | 94.11–100% | 97.92–99.70% |
All regions (n = 919) | 99.35–99.46% | 99.24–99.35% | 98.25–100% | 98.59–99.67% |