Table 2 Outcome: activity limitations. Prevalence of chronic conditions in people with activity limitations; prevalence ratios (PRs) (95% CI) from Poisson regression analyses; population-associated fractions (PAFs), Canada, 2000–01
Prevalence (%) in people with activity limitationsPR unadjusted† for multimorbidityPR adjusted for multimorbidity‡PAF (%)
Age (years) (ref: 12–19 years)
    20–290.90 (0.80 to 1.00)
    30–390.99 (0.90 to 1.10)
    40–491.27∗ (1.16 to 1.40)
    50–591.48∗ (1.34 to 1.63)
    60–691.66∗ (1.50 to 1.83)
    70–791.67∗ (1.51 to 1.85)
    80+1.65∗ (1.46 to 1.87)
Gender (ref: male)
    Female1.20∗ (1.15 to 1.25)
Chronic condition
    Allergies38.11.63∗ (1.56 to 1.70)1.22∗ (1.17 to 1.28)6.9
    Back problems28.61.68∗ (1.61 to 1.76)1.18∗ (1.12 to 1.24)4.3
    Arthritis/rheumatism38.32.42∗ (2.31 to 2.55)1.78∗ (1.69 to 1.88)16.8
    High blood pressure26.41.58∗ (1.51 to 1.67)1.22∗ (1.15 to 1.28)4.7
    Migraines15.51.93∗ (1.82 to 2.04)1.36∗ (1.28 to 1.45)4.1
    Asthma17.32.40∗ (2.28 to 2.53)1.76∗ (1.66 to 1.87)7.5
    Heart disease17.12.62∗ (2.49 to 2.77)1.78∗ (1.68 to 1.89)7.5
    Thyroid condition10.11.48∗ (1.38 to 1.58)1.18∗ (1.10 to 1.27)1.5
    Crohn’s disease/colitis/ulcers11.72.21∗ (2.09 to 2.34)1.35∗ (1.27 to 1.45)3.1
    Diabetes11.32.00∗ (1.88 to 2.12)1.49∗ (1.40 to 1.60)3.7
    Cancer6.22.40∗ (2.22 to 2.58)1.93∗ (1.78 to 2.11)3.0
    Fibromyalgia/chronic fatigue syndrome6.93.59∗ (3.34 to 3.85)2.02∗ (1.84 to 2.22)3.5
    Stroke4.82.96∗ (2.72 to 3.21)1.87∗ (1.68 to 2.08)2.3
  • ∗p<0.001; †adjusted for age and sex only (e.g. age + gender + allergies; age + gender + asthma; …); ‡age + gender + allergies + back problems +… + stroke.