Table 4.
Parameters | AUROC | 95% CI | Sensitivity | Specificity | PPV | NPV | Accuracy | P | P *,†,‡,§ | P || | |
---|---|---|---|---|---|---|---|---|---|---|---|
Lower | Upper | (%) | (%) | (%) | (%) | (%) | |||||
MELD* | 0.77 | 0.63 | 0.87 | 92 | 55 | 57 | 92 | 70 | 0.0009 | ‐ | ‐ |
4COL7S | 0.73 | 0.59 | 0.84 | 77 | 63 | 57 | 81 | 68 | 0.0012 | ‐ | 0.6553 |
MELD + 4COL7S*, ¶ | 0.83 | 0.71 | 0.90 | 69 | 85 | 75 | 81 | 79 | <0.0001 | 0.3419* | 0.2419 |
MELD + Age†, ¶ | 0.84 | 0.73 | 0.91 | 58 | 95 | 88 | 78 | 80 | <0.0001 | ‐ | 0.1576 |
MELD + Age + 4COL7S†, ¶ | 0.89 | 0.76 | 0.95 | 88 | 83 | 77 | 92 | 85 | <0.0001 | 0.0497† | 0.0135 |
MELD + ln[NH3]‡, ¶ | 0.83 | 0.73 | 0.90 | 92 | 73 | 69 | 95 | 80 | <0.0001 | ‐ | 0.1537 |
MELD + ln[NH3] + 4COL7S‡, ¶ | 0.90 | 0.79 | 0.95 | 92 | 73 | 69 | 95 | 80 | <0.0001 | 0.0118‡ | 0.0083 |
MELD + Age + ln[NH3]§, ¶ | 0.90 | 0.79 | 0.95 | 96 | 70 | 68 | 97 | 80 | <0.0001 | ‐ | 0.0032 |
MELD + Age + ln[NH3] + 4COL7S§, ¶ | 0.93 | 0.82 | 0.97 | 88 | 90 | 85 | 92 | 89 | <0.0001 | 0.0855§ | 0.0008 |
Statistics were evaluated in 66 non‐acetaminophen‐associated ALF cases with available 4COL7S levels. *,†,‡,§Significance with comparison between corresponding Cox regression models inclusive or exclusive of 4COL7S (by DeLong method); ||significance with comparison to MELD (by DeLong method); ¶details of each Cox regression model in Supporting Table S3. P < 0.05 was significant.
Abbreviations: CI, confidence interval; NPV, negative predictive value; PPV, positive predictive value; T‐Bil, total bilirubin.