Table 2 Association between Vitamin C and HPV in multiple regression
From: Association between serum vitamin C and HPV infection in American women: a cross-sectional study
Variable | Model I | Model II | Model III | Model IV | ||||
|---|---|---|---|---|---|---|---|---|
OR(95% CI) | f-value | OR(95% CI) | f-value | OR(95% CI) | f-value | OR(95% CI) | f-value | |
Vitamin C | 0.995 (0.991 ~ 0.998) | 0.001 | 0.998 (0.994 ~ 1.001) | 0.183 | 0.998 (0.994 ~ 1.001) | 0.222 | 0.998 (0.994 ~ 1.001) | 0.24 |
Vitamin C (umol/L) | ||||||||
≤23.99 | 1(Ref) | 1(Ref) | (Ref) | (Ref) | ||||
24–49.99 | 0.75 (0.56–1) | 0.048 | 0.76 (0.56–1.03) | 0.076 | 0.75 (0.55–1.02) | 0.067 | 0.76 (0.56–1.04) | 0.082 |
50–69.99 | 0.63 (0.47–0.83) | 0.001 | 0.7 (0.52–0.94) | 0.019 | 0.7 (0.52–0.95) | 0.022 | 0.71 (0.52–0.96) | 0.026 |
≥70 | 0.61 (0.46–0.82) | 0.001 | 0.76 (0.55–1.04) | 0.083 | 0.76 (0.56–1.05) | 0.094 | 0.77 (0.56–1.06) | 0.113 |
Trend.Test | 0.86 (0.79–0.94) | 0.001 | 0.93 (0.85–1.02) | 0.143 | 0.94 (0.85–1.03) | 0.179 | 0.94 (0.85–1.03) | 0.202 |