Sensitivity (95% CI) | Specificity (95% CI) | PPV (95% CI) | NPV (95% CI) | LR+ (95% CI) | LR− (95% CI) | |
Original Feverkidstool | ||||||
Pneumonia | ||||||
Risk of ≥2.5% | 0.85 (0.77 to 0.94) | 0.58 (0.54 to 0.63) | 0.10 (0.06 to 0.14) | 0.99 (0.98 to 0.99) | 2.06 (1.39 to 3.07) | 0.25 (0.08 to 0.76) |
Risk of ≥5% | 0.81 (0.71 to 0.91) | 0.76 (0.73 to 0.79) | 0.15 (0.09 to 0.22) | 0.99 (0.98 to 0.99) | 3.41 (2.23 to 5.20) | 0.24 (0.10 to 0.62) |
Risk of ≥10% | 0.62 (0.47 to 0.78) | 0.89 (0.87 to 0.92) | 0.24 (0.13 to 0.34) | 0.98 (0.97 to 0.99) | 5.83 (3.90 to 8.71) | 0.42 (0.25 to 0.69) |
Risk of ≥15% | 0.48 (0.31 to 0.65) | 0.93 (0.91 to 0.95) | 0.27 (0.14 to 0.40) | 0.97 (0.96 to 0.98) | 6.80 (3.87 to 11.97) | 0.56 (0.37 to 0.84) |
Risk of ≥20% | 0.40 (0.23 to 0.58) | 0.95 (0.94 to 0.97) | 0.31 (0.16 to 0.47) | 0.97 (0.96 to 0.98) | 8.52 (4.57 to 15.90) | 0.63 (0.45 to 0.87) |
Risk of ≥30% | 0.27 (0.10 to 0.45) | 0.99 (0.98 to 1.00) | 0.60 (0.39 to 0.81) | 0.96 (0.95 to 0.98) | 28.09 (8.16 to 96.67) | 0.73 (0.57 to 0.94) |
Other SBIs | ||||||
Risk of ≥2.5% | 0.98 (0.97 to 1.00) | 0.19 (0.15 to 0.22) | 0.13 (0.10 to 0.16) | 0.99 (0.98 to 1.00) | 1.21 (1.13 to 1.30) | 0.09 (0.01 to 0.65) |
Risk of ≥5% | 0.96 (0.94 to 0.99) | 0.41 (0.37 to 0.46) | 0.17 (0.13 to 0.21) | 0.99 (0.98 to 1.00) | 1.64 (1.48 to 1.83) | 0.08 (0.02 to 0.43) |
Risk of ≥10% | 0.85 (0.78 to 0.92) | 0.70 (0.67 to 0.74) | 0.26 (0.20 to 0.33) | 0.98 (0.96 to 0.99) | 2.87 (2.37 to 3.48) | 0.21 (0.10 to 0.42) |
Risk of ≥15% | 0.54 (0.42 to 0.66) | 0.82 (0.79 to 0.85) | 0.27 (0.19 to 0.36) | 0.94 (0.92 to 0.95) | 3.03 (2.24 to 4.12) | 0.56 (0.41 to 0.76) |
Risk of ≥20% | 0.38 (0.26 to 0.50) | 0.89 (0.86 to 0.91) | 0.30 (0.19 to 0.40) | 0.92 (0.90 to 0.94) | 3.37 (2.23 to 5.09) | 0.70 (0.57 to 0.86) |
Risk of ≥30% | 0.25 (0.13 to 0.36) | 0.94 (0.92 to 0.95) | 0.32 (0.18 to 0.46) | 0.91 (0.89 to 0.93) | 3.82 (2.15 to 6.77) | 0.81 (0.69 to 0.93) |
Updated Feverkidstool | ||||||
Pneumonia | ||||||
Risk of ≥2.5% | 0.88 (0.80 to 0.95) | 0.75 (0.71 to 0.78) | 0.16 (0.09 to 0.22) | 0.99 (0.99 to 1.00) | 3.48 (2.39 to 5.07) | 0.16 (0.05 to 0.49) |
Risk of ≥5% | 0.85 (0.76 to 0.94) | 0.83 (0.80 to 0.86) | 0.21 (0.13 to 0.29) | 0.99 (0.99 to 1.00) | 4.93 (3.55 to 6.84) | 0.18 (0.07 to 0.49) |
Risk of ≥10% | 0.76 (0.64 to 0.88) | 0.89 (0.86 to 0.91) | 0.27 (0.17 to 0.37) | 0.99 (0.98 to 0.99) | 6.84 (4.49 to 10.41) | 0.27 (0.14 to 0.53) |
Risk of ≥15% | 0.72 (0.60 to 0.85) | 0.92 (0.90 to 0.94) | 0.33 (0.21 to 0.45) | 0.98 (0.98 to 0.99) | 9.27 (5.47 to 15.72) | 0.30 (0.15 to 0.58) |
Risk of ≥20% | 0.66 (0.52 to 0.80) | 0.94 (0.93 to 0.96) | 0.39 (0.25 to 0.53) | 0.98 (0.97 to 0.99) | 11.88 (7.07 to 19.97) | 0.36 (0.20 to 0.63) |
Risk of ≥30% | 0.50 (0.34 to 0.67) | 0.97 (0.96 to 0.98) | 0.48 (0.31 to 0.65) | 0.97 (0.96 to 0.98) | 17.45 (8.88 to 34.27) | 0.50 (0.31 to 0.82) |
Other SBIs | ||||||
Risk of ≥2.5% | 0.97 (0.94 to 0.99) | 0.62 (0.58 to 0.66) | 0.24 (0.19 to 0.30) | 0.99 (0.99 to 1.00) | 2.57 (2.22 to 2.99) | 0.05 (0.01 to 0.26) |
Risk of ≥5% | 0.92 (0.88 to 0.97) | 0.75 (0.72 to 0.79) | 0.32 (0.25 to 0.39) | 0.99 (0.98 to 1.00) | 3.71 (3.04 to 4.51) | 0.10 (0.04 to 0.26) |
Risk of ≥10% | 0.88 (0.82 to 0.94) | 0.83 (0.80 to 0.86) | 0.39 (0.31 to 0.47) | 0.98 (0.97 to 0.99) | 5.05 (4.04 to 6.32) | 0.15 (0.07 to 0.30) |
Risk of ≥15% | 0.84 (0.77 to 0.91) | 0.86 (0.84 to 0.89) | 0.43 (0.35 to 0.52) | 0.98(0.97 to 0.99) | 6.16 (4.78 to 7.93) | 0.18 (0.10 to 0.34) |
Risk of ≥20% | 0.80 (0.72 to 0.88) | 0.89 (0.86 to 0.91) | 0.46 (0.37 to 0.56) | 0.97 (0.96 to 0.98) | 6.95 (5.27 to 9.17) | 0.22 (0.14 to 0.37) |
Risk of ≥30% | 0.67 (0.57 to 0.77) | 0.91 (0.89 to 0.93) | 0.49 (0.39 to 0.59) | 0.96 (0.94 to 0.97) | 7.70 (5.49 to 10.82) | 0.36 (0.25 to 0.52) |
LR+, positive likelihood ratio; LR−, negative likelihood ratio; NPV, negative predictive value; PPV, positive predictive value; SBI, serious bacterial infection.