Negative binomial model incidence rate ratios for the number of public, private and all visits, with their 95% confidence intervals.

Study population: non-student (aged over 25) residents of Oulu, Finland, in 2017–2018 (N = 118,397). Other covariates included in the model but not shown in the figure are sex and age groups 25–34, 35–44, 45–54, 55–64, 65–74, and over 75. The results for each dependent variable are estimated from separate regressions. The x-axis is scaled using log of base 10. The vertical dashed line is set at IRR = 1.