Table 2.

Sensitivity, specificity, PPV, and NPV of question #5 (weak stream) vs total IPSS score at various thresholds

Question #5 (Weak Stream)	Sensitivity	Specificity	PPV	NPV
≥ 1	52	66	19	90
≥ 2	39	86	31	90
≥ 3	28	92	36	89
≥ 4	17	95	36	88
≥ 5	9	98	42	87

Quality of Life	Sensitivity	Specificity	PPV	NPV
≥ 1	78	41	17	93
≥ 2	52	71	21	91
≥ 3	33	84	23	89
≥ 4	20	91	25	88
≥ 5	9	96	25	88
≥ 6	2	99	20	87

IPSS Total Score	Sensitivity	Specificity	PPV	NPV
≥ 1	96	12	15	95
≥ 2	80	25	15	89
≥ 3	73	40	16	91
≥ 4	67	48	17	90
≥ 5	65	58	20	91
≥ 6	61	64	20	92
≥ 8	56	75	25	92
≥ 11	38	84	26	90
≥ 16	23	93	33	89
≥ 20	15	96	39	88
≥ 25	4	98	29	87
≥ 30	2	99	33	87

IPSS, International Prostate Symptom Score; NPV, negative predictive value; PPV, positive predictive value.