Fig. 1

The association between incident RA and its risk factors for univariable and multivariable models. The association of incident RA and its potential risk factors was estimated by Cox Proportional Hazards models with age as the time scale. Analyses excluded participants who were diagnosed with any disease or withdrew before baseline and within three months during follow-up, and were adjusted for sex, BMI, total physical activity (TPA), Townsend deprivation index, and healthy diet score. Factors significant in the univariable model were included in the multivariable model. The error bars denote 95% confidence interval of hazard ratio. CRP C-reactive protein, Hb hemoglobin