Relationship between NPO status before angiography and vomiting
| Before Matching | After Propensity Score Matching | |||||
|---|---|---|---|---|---|---|
| Diet Group (n = 2354) | Fasting Group (n = 200) | Odds Ratio | Diet Group (n = 1800) | Fasting Group (n = 200) | Odds Ratio | |
| Nausea/vomiting + | 22 (0.9) | 5 (2.5) | 0.35 (0.13–0.95) | 20 (1.1) | 5 (2.5) | 0.49 (0.17–1.40) |
| Nausea/vomiting − | 2332 (99.1) | 195 (97.5) | 1780 (98.9) | 195 (97.5) | ||
Note:—Values in parentheses are percentages.