Table 2.

Sensitivity and Specificity of Algorithms

	Sensitivity (%)			Specificity (%)
Algorithm Source	Reported	1995	1998	Reported	1995	1998
Nattinger	80.11–80.26	79.6*	77.4*	99.95	99.9*	99.9*
Warren	62.0	76*	73.7*	99.9	99.6*	99.7*
Freeman	90.0	58.7*	59.0*	99.86	100*	100*

	Ages 65–69	Ages 70–74	Ages 75–79	Ages 80+	Ages 65–69	Ages 70–74	Ages 75–79	Ages 80+
By age group, using 1998 data
Nattinger	81.6*	77.7*	76.6*	74.4*	99.9†	99.9†	99.9†	99.9†
Warren	78.6*	74.5*	71.7*	70.8*	99.7*	99.6*	99.7*	99.8*
Freeman	63.2*	62.6*	59.6*	51.4*	100†	100†	100†	100†

	White	Black	Asian	White	Black	Asian
By race, using 1998 data
Nattinger	77*	80.5	85.7*	99.9*	100‡	100‡
Warren	73.7*	72.2*	79*	99.7*	99.7*	99.7†
Freeman	58.7*	62.2*	64.4*	100‡	100‡	100‡

^*p<.00001 for equality of proportions compared with originally published value (for all subjects).

^†p<.007 for equality of proportions compared with originally published value (for all subjects).

^‡Unable to test for equality of proportions due to estimated specificity of 100%.

Note: Readers may want to divide the p-values by the number of comparisons to address the multiplicity of outcomes in this study.