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Multivariate analysis of factors associated with absence of fibrosis or with portal fibrosis without septa (F0-F1 index of Metavir)
| Odds ratio (95% CI) | p Value | |
| Age (young) | 1.08 (1.03 to 1.13) | 0.006 |
| Female sex (v male) | 5.52 (1.61 to 18.89) | 0.007 |
| Normal ALT (v elevated ALT) | 14.27 (3.09 to 65.88) | 0.0001 |
| HLA-DRB1*11 (v other phenotypes) | 3.62 (1.03 to 12.71) | 0.03 |
| Duration of contamination (long) | 1.02 (1.1 to 0.95) | 0.46 |
ALT, alanine aminotransferase.
