Table 4.
Mean health care costs per patient per year for primary and secondary care IBS patients and their matched controls specified per year before and after diagnosis for IBS, chronic disorders, functional disorders and all other disorders (mean (SD) in Euro)
| T = −3 Mean (SD) | T = −2 Mean (SD) | T = −1 Mean (SD) | Mean annual before Mean (SD) | T = +1 Mean (SD) | T = +2 Mean (SD) | T = +3 Mean (SD) | Mean annual after Mean (SD) | Mean dif Mean (SD) | p value difference∂ | ||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Irritable bowel syndrome | Primary care patients | – | 0 (0) | 0 (0) | 0 (0) | 0 (0) | 0 (0) | 0 (0) | 0 (0) | 0 (0) | <0.01× |
| Secondary care patients | 0 (0) | 0 (0) | 0 (0) | 0 (0) | 725 (866) | 174 (520) | 175 (468) | 427 (745) | 427 (572) | ||
| Primary care controls | – | 0 (0) | 0 (0) | 0 (0) | 0 (0) | 0 (0) | 0 (0) | 0 (0) | 0 (0) | 0.99 | |
| Secondary care controls | 0 (0) | 0 (0) | 0 (0) | 0 (0) | 0 (0) | 0 (0) | 0 (0) | 0 (0) | 0 (0) | ||
| Chronic disorders | Primary care patients | – | 332 (2074) | 161 (543) | 211 (1213) | 289 (1151) | 271 (1063) | 407 (1819) | 312 (1319) | 100 (1299) | <0.01× |
| Secondary care patients | 318 (2373) | 326 (1649) | 379 (2017) | 352 (1967) | 600 (2659) | 652 (2522) | 684 (2407) | 635 (2564) | 282 (2337) | ||
| Primary care controls | – | 189 (1095) | 236 (1295) | 222 (1239) | 212 (1137) | 309 (1600) | 413 (1924) | 294 (1523) | 72 (1473) | 0.38 | |
| Secondary care controls | 385 (2120) | 398 (2314) | 354 (1783) | 373 (2021) | 395 (2926) | 379 (2187) | 411 (2500) | 393 (2611) | 20 (2386) | ||
| Functional disorders | Primary care patients | – | 21 (83) | 67 (390) | 54 (330) | 30 (236) | 41 (228) | 17 (141) | 31 (214) | −23 (241) | <0.01× |
| Secondary care patients | 27 (242) | 32 (262) | 40 (289) | 36 (274) | 55 (346) | 58 (478) | 60 (365) | 57 (399) | 21 (353) | ||
| Primary care controls | – | 42 (440) | 6 (57) | 17 (242) | 12 (134) | 9 (96) | 13 (112) | 11 (117) | −6 (149) | 0.32 | |
| Secondary care controls | 17 (214) | 18 (218) | 17 (182) | 17 (199) | 19 (223) | 16 (151) | 15 (136) | 17 (185) | 0 (191) | ||
| All other disordersa | Primary care patients | – | 815 (1752) | 860 (2382) | 847 (2210) | 1026 (2312) | 1080 (2585) | 1120 (2215) | 1067 (2384) | 221 (2351) | <0.01× |
| Secondary care patients | 794 (2863) | 705 (2064) | 1081 (2828) | 915 (2616) | 2315 (5429) | 1794 (5322) | 1896 (4882) | 2054 (5292) | 1139 (4395) | ||
| Primary care controls | – | 360 (954) | 633 (2005) | 553 (1767) | 598 (1880) | 730 (2234) | 625 (1407) | 650 (1911) | 97 (1885) | 0.26 | |
| Secondary care controls | 857 (4107) | 903 (3968) | 971 (5630) | 932 (4925) | 880 (4197) | 937 (4294) | 1016 (4212) | 927 (4233) | 5 (4530) | ||
T = −3 indicates three years before diagnosis, T = +1 one year after diagnosis and so forth
aExcluding irritable bowel syndrome, chronic disorders, functional disorders and psychiatric disorders; ×: significant difference at alpha = 0.05; ∂: p value for the difference in increase of costs between primary and secondary care subjects