Table 3

Performance of the FINDRISC diabetes risk score in predicting incident diabetes mellitus after 7.3 years (median) of follow-up

Criterion	Sensitivity	Specificity	Youden Index	LR+	LR−	PPV	NPV
≥2	100	0	0	1.00		8.40
>2	100	1.49	0.01	1.02	0.00	8.52	100
>3	100	4.57	0.05	1.05	0.00	8.77	100
>4	98.08	7.03	0.05	1.05	0.27	8.82	97.56
>5	97.12	9.84	0.07	1.08	0.29	8.99	97.39
>6	96.15	14.76	0.11	1.13	0.26	9.37	97.66
>7	91.35	21.62	0.13	1.17	0.40	9.66	96.46
>8	87.50	30.14	0.18	1.25	0.41	10.30	96.34
>9	81.73	38.84	0.21	1.34	0.47	10.92	95.86
>10	74.04	47.80	0.22	1.42	0.54	11.51	95.26
>11	65.38	57.12	0.23	1.52	0.61	12.27	94.73
>12	58.65	65.73	0.24	1.71	0.63	13.57	94.55
>13	50.96	75.04	0.26	2.04	0.65	15.77	94.35
>14	47.12	81.37	0.28	2.53	0.65	18.83	94.38
>15	33.65	87.26	0.21	2.64	0.76	19.50	93.48
>16	26.92	91.12	0.18	3.03	0.80	21.75	93.15
>17	23.08	93.76	0.17	3.70	0.82	25.33	93.00
>18	17.31	96.92	0.14	5.63	0.85	34.01	92.74
>19	11.54	98.42	0.10	7.29	0.90	40.11	92.39
>20	6.73	98.77	0.05	5.47	0.94	33.41	92.03
>21	5.77	99.38	0.05	9.38	0.95	46.05	92.00
>22	4.81	99.56	0.04	10.94	0.96	50.06	91.94
>23	3.85	99.74	0.04	14.59	0.96	57.59	91.88
>24	3.85	100	0.04		0.96	100	91.90
>25	0.00	100	0		1.00		91.60

LR+, positive likelihood ratio; LR−, negative likelihood ratio; NPV, negative predictive value; PPV, positive predictive value.