Table 2.

Summary statistics of sensitivity and specificity according to quantile group

	Quantile 1	Quantile 2	Quantile 3	Quantile 4	Quantile 5
WBC	1.3–5.9	5.9–7.3	7.3–8.92	8.92–11.7	11.7–222.7
Sensitivity	74.1 [71.64‒76.1]	71.73 [69.39‒74.06]	91.95 [89.9‒93.64]	59.01 [55.04‒62.5]	33.33 [26.09‒40]
Specificity	92.29 [91.63‒92.93]	93.32 [92.73‒93.9]	95.88 [95.46‒96.34]	97.9 [97.56‒98.21]	98.76 [98.46‒98.97]
CRP	0.1–0.48	0.48–1.81	1.81–5.13	5.13–11.89	11.89–60.61
Sensitivity	55.97 [51.94‒60.29]	87.91 [85.39‒90.14]	83 [80.95‒85.06]	71.34 [68.82‒73.68]	45.41 [41.74‒48.89]
Specificity	95.7 [95.22‒96.15]	93.79 [93.25‒94.34]	97.1 [96.66‒97.5]	95.06 [94.56‒95.56]	98.79 [98.56‒99.01]
LD	62–174	174–206	206–244	244–309	309–5591
Sensitivity	83.2 [81.05‒85.04]	65.49 [62.5‒68.13]	81.1 [79.07‒83.15]	67.01 [63.28‒70.51]	60 [55.56‒64.52]
Specificity	96.66 [96.23‒97.05]	95.13 [94.63‒95.62]	95.73 [95.27‒96.19]	98.14 [97.84‒98.45]	92.26 [91.69‒92.83]
Age	18–55	55–64	64–71	71–77	77–98
Sensitivity	71.96 [69.64‒74.14]	74.14 [70.18‒77.97]	60.27 [56.05‒64.41]	64.95 [61.61‒68.22]	77.32 [74.49‒80.24]
Specificity	94.52 [94‒95.02]	96.25 [95.8‒96.68]	96.89 [96.47‒97.25]	96.49 [96.08‒96.89]	95.6 [95.13‒96.06]

The statistics are summarised as the median and inter-quantile range.