Table 1.
Denmark | Norway | Sweden | Finland | Iceland | ||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
OR | (CI) | OR | (CI) | OR | (CI) | OR | (CI) | |||||||
Member register (sex and age known) |
n = | 7123 | 4593 | 2435 | 5845 | 384* | ||||||||
Male n = (%) | 2078 (29.2) | 1321 (28.8) | 579 (23.8) | 1514 (25.9) | Data missing | |||||||||
<40 years n = (%) | 1404 (19.7) | 862 (18.8) | 362 (14.9) | 1224 (20.9) | Data missing | |||||||||
41–60 years n = (%) | 3607 (50.6) | 2370 (51.6) | 1251 (51.4) | 3070 (52.6) | Data missing | |||||||||
>60 years n = (%) | 2112 (29.7) | 1361 (29.6) | 821 (33.7)) | 1551 (26.5) | Data missing | |||||||||
| ||||||||||||||
Survey sample (OR versus member register) |
n = | 3361 | 1014 | 1046 | 1045 | 384* | ||||||||
Male n = (%) | 976 (29.0) | 0.99 | (0.91–1.08) | 291 (28.7) | 0.99 | (0.86–1.15) | 251 (24.0) | 1.00 | (0.85–1.19) | 274 (26.2) | 1.01 | (0.87–1.16) | Data missing | |
<40 years n = (%) | 671 (19.9) | 1.01 | (0.91–1.12) | 189 (18.6) | 0.99 | (0.83–1.17) | 157 (15.0) | 1.01 | (0.82–1.23) | 222 (21.3) | 1.01 | (0.86–1.18) | Data missing | |
41–60 years n = (%) | 1690 (50.3) | 0.99 | (0.92–1.06) | 520 (51.3) | 0.99 | (0.88–1.11) | 536 (51.3) | 0.99 | (0.88–1.12) | 553 (52.9) | 1.01 | (0.90–1.12) | Data missing | |
>60 years n = (%) | 1001 (29.8) | 1.00 | (0.92–1.09) | 305 (30.1) | 1.01 | (0.88–1.16) | 353 (33.7) | 1.00 | (0.86–1.15) | 270 (25.8) | 0.97 | (0.84–1.12) | Data missing | |
| ||||||||||||||
Respondents (OR versus survey sample) |
n = (response rate) | 1865 (55.5) | 516 (50.9) | 627 (59.9) | 551 (52.7) | 236 (61.5)* | ||||||||
Male n = (%) | 520 (27.9) | 0.96 | (0.85–1.08) | 150 (29.0) | 1.01 | (0.81–1.26) | 149 (23.8) | 0.99 | (0.79–1.24) | 138 (25.0) | 0.95 | (0.75–1.20) | 54 (22.8) | |
<40 years n = (%) | 351 (18.8) | 0.94 | (0.81–1.08) | 76 (14.7) | 0.79 | (0.59–1.05) | 81 (12.9) | 0.86 | (0.64–1.14) | 103 (18.7) | 0.87 | (0.68–1.13) | 62 (26.2) | |
41–60 years n = (%) | 1047 (56.1) | 1.11 | (1.01–1.22)+ | 304 (58.9) | 1.14 | (0.96–1.37) | 373 (59.5) | 1.16 | (0.98–1.36) | 323 (58.6) | 1.11 | (0.93–1.31) | 137 (57.8) | |
>60 years n = (%) | 468 (25.1) | 0.84 | (0.74–0.95)− | 136 (26.4) | 0.87 | (0.69–1.10) | 173 (27.6) | 0.81 | (0.66–1.01) | 125 (22.7) | 0.88 | (0.69–1.11) | 38 (16.0) |
*The precise number of people with MS who are members of the Icelandic MS Society is not known. It is known that there are 430 people with MS in Iceland, and a study has shown that out of 358 people with MS, 320 (89.4%) were members of the Icelandic MS Society. Therefore, it is assumed that there are approximately 384 people with MS in the member register of the Icelandic MS Society.
+signifies that the prevalence is significantly higher than the lowest prevalence. Significance has been determined by interpretation of the 95% confidence intervals (CIs) (if 1 is contained in the CI, P < 0.05).