Table 5.

Diagnostic test characteristics for fracture: BTM levels in the upper two tertiles and a FN T-score of −2 or less versus other BTM and FN T-score groups

	Sensitivity (95% CI)	Specificity (95% CI)	PPV (95% CI)	NPV (95% CI)	Positive Likelihood Ratio (95% CI)	Negative Likelihood Ratio (95% CI)
Osteocalcin ≥ 21 and FN T-score of −2 or less	56 (37 to 79)	81 (69 to 90)	54 (33 to 74)	84 (72 to 92)	3.17 (1.68 to 5.99)	0.50 (0.69 to 0.84)
P1NP ≥ 46 and FN T-score of −2 or less	63 (41 to 82)	86 (74 to 93)	64 (41 to 82)	86 (74 to 93)	4.61 (2.25 to 9.45)	0.42 (0.24 to 0.74)
Trap-5b ≥ 3.7 and FN T-score −2 or less	59 (37 to 79)	81 (68 to 90)	54 (33 to 74)	84 (71 to 92)	3.12 (1.65 to 5.88)	0.50 (0.30 to 0.84)

PPV, positive predictive value; NPV, negative predictive value.