Table 3.

Performance of the Model in Predicting Limited Health Literacy at Varying Cutoffs of Predicted Probability (N = 225)

Probability Cutoff	Sensitivity, %	Specificity, %	Positive Likelihood Ratioa	Negative Likelihood Ratiob
0.025	100	49	1.95	0
0.05	97	68	3.04	0.04
0.075	88	71	3.06	0.16
0.1	85	77	3.79	0.19
0.2	76	86	5.62	0.27
0.3	68	95	12.92	0.34
0.4	62	96	16.85	0.40
0.5	50	98	23.88	0.51

^a The increase in likelihood of having limited health literacy if subject is found to have a positive result (an individual probability equal to or greater than the given cutoff).

^b The decrease in likelihood of having limited health literacy if a subject is found to have a negative result (an individual probability less than the given cutoff).