Table 1.
Variates | Sweden (n=481) | Norway (n=465) | United Kingdom (n=477) | Iceland (n=544) | P value (ANOVAa) | |||||||
Age (years) | .15 | |||||||||||
|
Mean (SD) | 50.3 (16.9) | 48.1 (17.2) | 49.6 (15.9) | 48.3 (17.2) |
|
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|
Median (range) | 53 (18-88) | 50 (18-84) | 49 (18-90) | 47 (19-88) |
|
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Survey duration, mean (SD) | 15.5 (11.5) | 15.4 (10.2) | 12.8 (7.36) | 20.7 (14.9) | <.001 |
aANOVA: analysis of variance.