Table 3.

Regression analysis to assess the association between coffee consumption and elevated alanine transaminase levels (ALT)

Coffee consumption	Odds ratio (95 % CI)	p value
Univariate
More than once a day	1.097 (0.617–1.953)
Daily	1.302 (0.794–2.135)
Less than weekly	1.380 (0.694–2.746)	0.7495
Less than monthly	1.006 (0.384–2.640)
Seldom/rarely	Ref.
After adjusting for age, gender and BMI
More than once a day	0.773 (0.447–1.339)
Daily	0.806 (0.497–1.308)	0.7905
Less than weekly	0.722 (0.355–1.467)
Less than monthly	0.554 (0.190–1.613)
Seldom/rarely	Ref.

CI confidence interval, Ref. reference group