| Alvarado Score | Modified Alvarado Score | RIPASA Score | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Score | Sensitivity | Specificity | Positive Predictive Value |
Negative Predictive Value |
Sensitivity | Specificity | Positive Predictive Value |
Negative Predictive Value |
Sensitivity | Specificity | Positive Predictive Value |
Negative Predictive Value |
| 1 | 1 (1–1) |
0.01 (0–0.02) |
0.34 (0.29–0.39) |
1 (1–1) |
1 (1–1) |
0.01 (0–0.02) |
0.34 (0.29–0.39) |
1 (1–1) |
||||
| 2 | 1 (1–1) |
0.02 (0–0.04) |
0.34 (0.28–0.4) |
1 (1–1) |
1 (1–1) |
0.02 (0–0.04) |
0.34 (0.28–0.4) |
1 (1–1) |
||||
| 3 | 0.99 (0.97–1) |
0.07 (0.03–0.11) |
0.35 (0.29–0.41) |
0.93 (0.8–1) |
0.99 (0.97–1) |
0.07 (0.03–0.11) |
0.35 (0.29–0.41) |
0.93 (0.8–1) |
1 (1–1) |
0 (0–0) |
0.34 (0.28–0.4) |
0 (0–0) |
| 4 | 0.94 (0.89–0.99) |
0.23 (0.17–0.29) |
0.38 (0.32–0.44) |
0.88 (0.79–0.97) |
0.92 (0.86–0.98) |
0.24 (0.18–0.3) |
0.38 (0.32–0.44) |
0.85 (0.75–0.95) |
1 (1–1) |
0.01 (0–0.02) |
0.34 (0.28–0.4) |
1 (1–1) |
| 5 | 0.85 (0.78–0.92) |
0.45 (0.38–0.52) |
0.44 (0.37–0.51) |
0.86 (0.79–0.93) |
0.83 (0.76–0.91) |
0.47 (0.4–0.54) |
0.44 (0.37–0.51) |
0.85 (0.78–0.92) |
0.99 (0.97–1) |
0.04 (0.01–0.07) |
0.34 (0.28–0.4) |
0.89 (0.68–1.1) |
| 6 | 0.73 (0.64–0.82) |
0.6 (0.53–0.67) |
0.48 (0.4–0.56) |
0.81 (0.75–0.87) |
0.69 (0.6–0.78) |
0.63 (0.56–0.7) |
0.49 (0.41–0.57) |
0.8 (0.74–0.86) |
0.97 (0.93–1) |
0.13 (0.08–0.18) |
0.36 (0.3–0.42) |
0.89 (0.77–1.01) |
| 7 | 0.59 (0.49–0.69) |
0.73 (0.67–0.79) |
0.53 (0.44–0.62) |
0.78 (0.72–0.84) |
0.46 (0.36–0.56) |
0.81 (0.75–0.87) |
0.54 (0.43–0.65) |
0.75 (0.69–0.81) |
0.84 (0.77–0.92) |
0.3 (0.23–0.37) |
0.38 (0.31–0.45) |
0.79 (0.69–0.89) |
| 8 | 0.42 (0.32–0.52) |
0.85 (0.8–0.9) |
0.58 (0.46–0.7) |
0.74 (0.68–0.8) |
0.19 (0.11–0.27) |
0.93 (0.89–0.97) |
0.58 (0.41–0.75) |
0.7 (0.64–0.76) |
0.73 (0.64–0.82) |
0.49 (0.42–0.56) |
0.42 (0.34–0.5) |
0.78 (0.7–0.86) |
| 9 | 0.18 (0.1–0.26) |
0.94 (0.91–0.97) |
0.61 (0.43–0.79) |
0.69 (0.63–0.75) |
0.01 (0–0.03) |
0.99 (0.98–1) |
0.33 (0–0.86) |
0.67 (0.62–0.72) |
0.7 (0.61–0.79) |
0.63 (0.56–0.7) |
0.49 (0.4–0.58) |
0.81 (0.75–0.87) |
| 10 | 0.01 (0–0.03) |
0.99 (0.98–1) |
0.33 (0–0.86) |
0.67 (0.62–0.72) |
0 (0–0) |
1 (1–1) |
0 (0–0) |
0.67 (0.62–0.72) |
0.46 (0.36–0.56) |
0.74 (0.68–0.8) |
0.47 (0.37–0.57) |
0.73 (0.67–0.79) |
| 11 | 0.39 (0.29–0.49) |
0.84 (0.79–0.89) |
0.55 (0.43–0.67) |
0.73 (0.67–0.79) |
||||||||
| 12 | 0.23 (0.15–0.32) |
0.93 (0.89–0.97) |
0.64 (0.48–0.8) |
0.7 (0.64–0.76) |
||||||||
| 13 | 0.09 (0.03–0.15) |
0.97 (0.95–0.99) |
0.62 (0.36–0.88) |
0.68 (0.62–0.74) |
||||||||
| 14 | 0.04 (0–0.08) |
0.99 (0.98–1) |
0.8 (0.45–1) |
0.67 (0.61–0.73) |
||||||||
| 15 | 0 (0–0) |
1 (1–1) |
0 (0–0) |
0.66 (0.6–0.72) |
||||||||
| Physician-Estimated Likelihood | ||||||||||||
| Score | Sensitivity | Specificity | Positive Predictive Value |
Negative Predictive Value |
||||||||
| <40% | 1 (1–1) |
0 (0–0) |
0.33 (0.28–0.38) |
0 (0–0) |
||||||||
| 40–60% | 0.89 (0.83–0.95) |
0.34 (0.27–0.41) |
0.4 (0.33–0.47) |
0.86 (0.78–0.94) |
||||||||
| 60–80% | 0.69 (0.6–0.78) |
0.7 (0.64–0.76) |
0.54 (0.45–0.63) |
0.82 (0.76–0.88) |
||||||||
| >80% | 0.23 (0.15–0.32) |
0.95 (0.92–0.98) |
0.71 (0.55–0.87) |
0.71 (0.65–0.77) |
||||||||
Results are reported as point estimates with 95% confidence intervals.