Hospital costs € mean (SD) Sick-leave costs € mean (SD) Total costs € mean (SD)
One-stage bilateral THR* 14 470 (1 510) 6 590 (6 460) 21 050 (6 960)
Two-stage bilateral THR† 18 190 (680) 9 410 (8 000) 27 600 (9 160)
WilcoxonSigned Rank Test p<0.001 p=0.004 p<0.001
*Based on observed individual values. †For each individual the expected costs were determined by applying regression functions as described in the Patients and methods section.
Table 6: Comparison between one- and two-stage model of bilateral THR procedures