Table 3

Results of the primary outcome—healthcare utilisation

Incidence density (% person days)Incidence rate ratio95% CIp Value
Group 1Group 2
Office visits9.013.020.3360.293 to 0.384<0.0001
Emergency room visits0.580.110.1940.099 to 0.373<0.0001
Hospital admissions0.370.060.1730.066 to 0.407<0.001

  • CIs and p values were calculated by applying exact Poisson statistics.