Table 1

Characteristics of the patients operated during June 2015–December 2021 by areas

Central FinlandSouth KareliaHUSNorth OstrobothniaLaplandNorth KareliaNorth SavoOstrobothnia
Lumbar discectomyCRtW areaCRtW areaControl areaControl areaControl areaControl areaControl areaControl area
 n4832142188920110372688112
 Female, n (%)203 (42.0)84 (39.3)1037 (47.4)400 (43.5)61 (55.5)167 (44.9)294 (42.7)52 (46.4)
 Mean age (SD)41.6 (10.4)42.6 (10.3)41.1 (10.0)41.7 (10.5)42.7 (10.7)42.2 (10.7)42.7 (10.8)41.9 (10.1)
Hip arthroplastyCRtW areaCRtW areaCRtW area*CRtW areaControl areaControl areaNAControl area
 n4182381645723267259NA243
 Female, n (%)204 (48.8)129 (54.2)926 (56.3)349 (48.3)135 (50.6)135 (52.1)NA134 (55.1)
 Mean age (SD)55.4 (6.6)56.7 (5.2)55.6 (6.2)55.4 (6.1)56.8 (5.3)56.7 (5.0)NA55.4 (6.4)
Knee arthroplastyCRtW areaCRtW areaCRtW area*CRtW areaControl areaControl areaControl areaControl area
 n4823091656866370307863245
 Female, n (%)312 (64.7)198 (64.1)1053 (63.6)530 (61.2)226 (61.1)198 (64.5)564 (65.4)144 (58.8)
 Mean age (SD)57.6 (4.8)57.1 (4.8)56.7 (5.3)57.4 (4.4)57.9 (4.5)57.9 (4.2)57.2 (4.7)58.4 (4.1)
  • The study includes 8 out of 21 Finnish hospital districts.

  • *Only Peijas Hospital is included from the HUS area.

  • CRtW, Coordinated Return to Work; HUS, hospital district of Helsinki and Uusimaa; NA, not available.