Table 5.

Subgroup Analyses According to Patient Age, Sex, and the Presence of Hypertension or Diabetes

Subgroup	TP	FP	FN	PPV (95% CI), %	P	Sen (95% CI), %	P
Age					0.001		0.887
Elderly (≥65 years)	376	67	5	84.9 (81.2–88.1)		98.7 (97.0–99.6)
Young (<65 years)	484	44	7	91.7 (89.0–93.9)		98.6 (97.1–99.4)
Sex					0.951		0.352
Male	532	69	9	88.5 (85.7–91.0)		98.3 (96.9–99.2)
Female	328	42	3	88.6 (85.0–91.7)		99.1 (97.4–99.8)
Hypertension					<0.001		<0.001
Yes	672	67	3	90.9 (88.6–92.9)		99.6 (98.7–99.9)
No	188	44	9	81.0 (75.4–85.9)		95.4 (91.5–97.9)
Diabetes					0.441		0.130
Yes	241	35	1	87.3 (82.8–91.0)		99.6 (97.7–100.0)
No	619	76	11	89.1 (86.5–91.3)		98.3 (96.9–99.1)

Abbreviations: CI, confidence interval; FN, false negative; FP, false positive; PPV, positive predictive value; Sen, sensitivity; TP, true positive.