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. 2019 Mar 19;16(4):e376–e382. doi: 10.1097/PTS.0000000000000593

TABLE 1.

Sensitivity, Specificity, and Predictive Values of the Fall Assessment Tool (N = 4114)

Fall
Yes, n No, n
High risk 309 1918 Positive predictive value
= 309/(309 + 1918)
= 13.9%
Low risk 138 1749 Negative predictive value
= 1749/(1749 + 138)
= 92.7%
Sensitivity Specificity
= 309/(309 + 138) = 1749/(1918 + 1749)
= 69.1% = 47.7%