Table 4.

Validation results for case definitions for hypertension in children 3–18 years of age.

Years of data	Algorithm	Hospital separations	Physician claims	Drug records	Sensitivity	Specificity	Positive predictive value	Negative predictive value	Kappa	Area under Receiver operating curve
1 (2016) N = 888	1	1 or more	1 or more		0.24 (0.16–0.33)	0.99 (0.98–1)	0.74 (0.59–0.9)	0.92 (0.9–0.94)	0.33 (0.23–0.44)	0.62
	2	1 or more	2 or more		0.18 (0.1–0.26)	0.99 (0.99–1)	0.77 (0.6–0.95)	0.91 (0.89–0.93)	0.26 (0.16–0.37)	0.59
	3	1 or more	1 or more	1 or more	0.51 (0.41–0.61)	0.98 (0.97–0.99)	0.74 (0.63–0.85)	0.94 (0.93–0.96)	0.57 (0.47–0.66)	0.74
	4	1 or more	2 or more	1 or more	0.49 (0.39–0.59)	0.98 (0.97–0.99)	0.75 (0.65––0.86)	0.94 (0.93–0.96)	0.56 (0.46–0.65)	0.74
	5	1 or more	1 or more	2 or more	0.44 (0.34–0.54)	0.98 (0.97–0.99)	0.73 (0.62–0.85)	0.94 (0.92–0.95)	0.51 (0.41–0.61)	0.71
	6	1 or more	2 or more	2 or more	0.38 (0.28–0.48)	0.98 (0.97–0.99)	0.73 (0.61–0.86)	0.93 (0.91–0.95)	0.46 (0.36–0.57)	0.68
2 2015/16 N = 2821	7	1 or more	1 or more		0.24 (0.17–0.3)	0.99 (0.99–1)	0.7 (0.58–0.82)	0.96 (0.95–0.96)	0.34 (0.26–0.42)	0.62
	8	1 or more	2 or more		0.19 (0.13–0.25)	1 (0.99–1)	0.72 (0.59–0.85)	0.95 (0.94–0.96)	0.28 (0.2–0.36)	0.59
	9	1 or more	1 or more	1 or more	0.42 (0.35–0.5)	0.99 (0.98–0.99)	0.69 (0.6–0.78)	0.97 (0.96–0.97)	0.5 (0.43–0.58)	0.71
	10	1 or more	2 or more	1 or more	0.39 (0.32–0.47)	0.99 (0.99–0.99)	0.7 (0.61–0.8)	0.96 (0.96–0.97)	0.48 (0.41–0.56)	0.69
	11	1 or more	1 or more	2 or more	0.37 (0.29–0.44)	0.99 (0.99–0.99)	0.7 (0.6–0.79)	0.96 (0.96–0.97)	0.46 (0.38–0.54)	0.68
	12	1 or more	2 or more	2 or more	0.34 (0.26–0.41)	0.99 (0.99–1)	0.71 (0.61–0.82)	0.96 (0.95–0.97)	0.44 (0.36–0.52)	0.66
3 14/15/16 N = 4331	13	1 or more	1 or more		0.22 (0.17–0.28)	0.99 (0.99–1)	0.65 (0.55–0.75)	0.96 (0.95––0.96)	0.31 (0.25–0.38)	0.61
	14	1 or more	2 or more		0.19 (0.14–0.24)	1 (0.99–1)	0.7 (0.59–0.81)	0.95 (0.95–0.96)	0.28 (0.22–0.35)	0.59
	15	1 or more	1 or more	1 or more	0.39 (0.33–0.45)	0.99 (0.98–0.99)	0.66 (0.58–0.74)	0.96 (0.96–0.97)	0.47 (0.41–0.53)	0.69
	16	1 or more	2 or more	1 or more	0.37 (0.3–0.43)	0.99 (0.99–0.99)	0.69 (0.61–0.77)	0.96 (0.96–0.97)	0.46 (0.39–0.52)	0.68
	17	1 or more	1 or more	2 or more	0.33 (0.27–0.39)	0.99 (0.99–0.99)	0.65 (0.56–0.73)	0.96 (0.96–0.97)	0.42 (0.35–0.48)	0.66