Table 4.

Multivariate logistic regression analysis of factors associated with the presence of early rheumatoid arthritis

	Odds ratio	95% confidence interval (β)	P value
Antibodies against oxidized low-density lipoprotein in the lag phase	0.431	0.023–7.945	Not significant
Antibodies against oxidized low-density lipoprotein in the propagation phase	0.155	0.010–2.295	Not significant
Antibodies against oxidized low-density lipoprotein in the decomposition phase	0.047	0.008–0.282	0.001
Plasma lipoprotein phospholipase A2 activity	1.044	1.013–1.077	0.006

The model includes antibodies against oxidized low-density lipoprotein in the lag phase, the propagation phase and the decomposition phase, and plasma lipoprotein phospholipase A₂ activity as defined from univariate analysis after adjustment for age and female gender.