Table 2 Known groups construct validity of the English version of the SF-NDI sub-scales (n = 86)
Dyspepsia severity* | Dyspepsia aetiology | |||||
|---|---|---|---|---|---|---|
SF-NDI sub-scale scores | Mild n = 23 | Severe n = 63 | p # | Organic n = 28 | Functional n = 58 | p # |
Tension (median; range) | 87.5 (50.0–100.0) | 62.5 (0–100.0) | < 0.001 | 75.0 (25.0–100.0) | 62.5 (0–100.0) | 0.05 |
Interference (median; range) | 100.0 (50.0–100.0) | 75.0 (0–100.0) | < 0.001 | 87.5 (50.0–100.0) | 75.0 (0–100.0) | 0.01 |
Eating/drinking (median; range) | 87.5 (37.5–100.0) | 62.5 (0–100.0) | < 0.001 | 75.0 (37.5–100.0) | 75.0 (0–100.0) | 0.05 |
knowledge/control (median; range) | 87.5 (75.0–100.0) | 62.5 (0–100.0) | < 0.001 | 75.0 (0–100.0) | 75.0 (12.5–100.0) | 0.12 |
work/study (median; range) | 100.0 (62.5–100.0) | 75.0 (0–100.0) | < 0.001 | 87.5 (25.0–100.0) | 75.0 (0–100.0) | 0.02 |
Total (median; range) | 90.0 (62.5–100.0) | 65.0 (5.0–97.5) | < 0.001 | 78.8 (50.0–100.0) | 68.8 (5.0–100.0) | 0.02 |