Fig. 2

Heatmap visualizations of regression coefficients for significant predictors in the regression quantile models of healthcare costs (left plot) and productivity costs (right plot). The colors in each square of the plots correspond to the values of the regression coefficients in either the healthcare or productivity cost quantile regression models (Tables 4–5). This figure allows for the observation of patterns in the magnitude of coefficients across different quantiles using color gradients. HRQoL: health-related quality of life; SF-12: Short Form 12 survey; ISS: injury severity score.