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Table 3 Ratios presenting the relative difference in the number of contacts in general practice for patients having specific combinations of diseases versus what would be expected on the basis of contact frequencies of those with either one of the diseases

From: Multimorbidity of chronic diseases and health care utilization in general practice

  Coronary heart disease Osteoarthritis COPD Chronic back- or neck disorder Cancer Stroke Depression Heart failure Anxiety disorder
Diabetes 0.78 (0.73 0.82) 0.79 (0.75 0.84) 0.68 (0.63 0.73) 0.77 (0.71 0.83) 0.79 (0.71 0.87) 0.68 (0.63 0.72) 0.79 (0.71 0.88) 0.73 (0.68 0.78) 0.75 (0.67 0.84)
Coronary heart disease   0.81 (0.76 0.87) 0.75 (0.70 0.81) 0.88 (0.83 0.93) 0.78 (0.70 0.87) 0.73 (0.66 0.81) 0.76 (0.69 0.84) 0.69 (0.65 0.74) 0.77 (0.66 0.90)
Osteoarthritis    0.77 (0.72 0.83) 0.87 (0.80 0.95) 0.75 (0.67 0.85) 0.82 (0.75 0.90) 0.89 (0.81 0.98) 0.83 (0.76 0.90) 0.77 (0.68 0.87)
COPD     0.82 (0.76 0.89) 0.90 (0.80 1.01) 0.77 (0.70 0.85) 0.71 (0.63 0.80) 0.81 (0.75 0.86) 0.80 (0.70 0.91)
Chronic back- or neck disorder      0.79 (0.71 0.86) 0.82 (0.73 0.92) 0.91 (0.75 1.11) 0.78 (0.69 0.89) 0.94 (0.83 1.07)
Cancer       0.71 (0.64 0.79) 0.79 (0.69 0.91) 0.79 (0.72 0.87) 0.80 (0.69 0.94)
Stroke        0.73 (0.65 0.82) 0.84 (0.75 0.94) 0.73 (0.58 0.92)
Depression         0.71 (0.63 0.80) 0.69 (0.62 0.78)
Heart failure          0.78 (0.69 0.88)
  1. Ratio and 95% confidence intervals are presented for patients with ten prevalent chronic diseases, adjusted for sex, age, number of other chronic diseases, and clustering of patients within general practices.