Table 4.

ROC analysis for proposed Brief Pornography Screen (BPS) with suggested cut-off scores

Statistic	Value of 4 on the BPS		Value of 5 on the BPS
	Value	95% CI	Value	95% CI
Sensitivity	58.4%	51.1–65.5%	68.4%	61.3–75.0%
Specificity	90.5%	83.2–95.3%	83.8%	75.6–90.3%
Positive Likelihood Ratio	6.13	3.36–11.20	4.23	2.71–6.60
Negative Likelihood Ratio	0.46	0.38–0.55	0.38	0.30–0.47
Disease prevalence	64.4%	58.7–69.9%	64.4%	58.7–69.9%
Positive Predictive Value	91.7%	85.8–95.3%	88.4%	83–92.3%
Negative Predictive Value	54.6%	50.1–59%	59.5%	53.9–64.8%
Accuracy	69.8%	64.2–75%	73.9%	68.5–78.8%