Rates difference at Mean

How to read the graph below

e.g.: Females with positive SARS-CoV-2 had a mean of 1.98 (95% confidence interval (CI) 1.63 to 2.29) more health care encounters overall per-person-year than those who were tested negative, with 0.31 (95% CI 0.05 to 0.56) more home care encounters to 0.81 (95% CI 0.69 to 0.93) more long-term care days.

*All comparisons are for test-positive versus test-negative people after matching. Mean total health care use may differ from summary of component use owing to rounding errors.
Chart: Deena Zaidi/CTVNews.ca Source: Canadian Medical Association Journal (CMAJ)