Table 1.

Results of model fitting and validation

TorontoFinlandItaly
Chronic renal insufficiency47/184 (26%)13/78 (17%)25/101 (25%)
    sensitivity
        proteinuria >3.5 g/d93%100%84%
        model89%77%60%
    specificity
        proteinuria >3.5 g/d38%30%17%
        model86%89%92%
    positive predictive value
        proteinuria >3.5 g/d34%24%25%
        model67%59%64%
    negative predictive value
        proteinuria >3.5 g/d94%100%76%
        model94%95%82%
    accuracy52%43%34%
    model85%87%79%