Table 5. Diagnostic performance of the 6.0 U/g Hb threshold on the STANDARD G6PD Test for all females on capillary specimens (n = 922).

The sensitivity, specificity, and predictive power for all females with less than 70%, 65%, and 60% activity are shown.

	Reference G6PD activity
	70%	65%	60%
Sensitivity (95% CI)	94.9 (82.7–99.4)	100.0 (88.8–100.0)	100.0 (88.1–100.0)
Specificity (95% CI)	92.3 (90.3–94.0)	91.7 (89.7–93.4)	91.5 (89.5–93.2)
Positive predictive power (95% CI)	35.2 (26.2–45.2)	29.5 (21.0–39.2)	27.6 (19.3–37.2)
Negative predictive power (95% CI)	99.8 (99.1–100.0)	100.0 (99.5–100.0)	100.0 (99.5–100.0)

CI, confidence interval; Hb, hemoglobin; G6PD, glucose-6-phosphate dehydrogenase.