Table 5

Comparison among the three countries of AS related absence from paid work and productivity costs calculated by friction cost method and human capital method for all the 209 patients completing the study

Netherlands (n=130) Mean (range)France (n=53) Mean (range)Belgium (n=26) Mean (range)Difference NL−F Mean (95% CI)*Difference NL−B Mean (95% CI)*Difference F−B Mean (95% CI)*
NL, The Netherlands; F, France; B, Belgium.
*95% CI tested by bootstrapping the difference in values between countries.
Days absent from paid work (days/patient/year)8.2 (0–130)4.5 (0–77)5.3 (0–60)3.7 (−1.9 to 9.2)2.9 (−3.9 to 9.1)−0.8 (−7.3 to 5.2)
Friction costs (euros/patient/year)557 (0–7356)324 (0–5978)274 (0–2354)233 (−151 to 583)283 (−64 to 616)50 (−290 to 408)
Human capital absence costs (euros/patient/year)688 (0–10714)336 (0–6614)309 (0–3270)352 (−96 to 783)377 (−63 to 812)27 (−369 to 427)
Human capital disability costs (euros/patient/year)8174 (0–46818)2854 (0–43550)3300 (0–34320)5320 (2268 to 8098)4874 (924 to 8234)−446 (−4556 to 3278)
Human capital total costs (euros/patient/year)8862 (0–46818)3188 (0–43550)3609 (0–34320)5674 (2635 to 8448)5253(1353 to 8613)−421 (−4530 to 3285)