Table 5.

Predictive Values at Each Threshold of IMPROVE RAM Score

Risk Score	Positive Predictive Value	Negative Predictive Value
0 vs ≥1	0.0085	0.9987
0 to 1 vs ≥2	0.0107	0.9967
0 to 2 vs ≥3	0.0129	0.9958
0 to 3 vs ≥4	0.0151	0.9942
0 to 4 vs ≥5	0.0231	0.9940
0 to 5 vs ≥6	0.0284	0.9936
0 to 6 vs ≥7	0.0272	0.9932
0 to 7 vs ≥8	0.0250	0.9930

IMPROVE indicates International Medical Prevention Registry on Venous Thromboembolism; RAM, risk assessment model.