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Table 2 Observed, purified and theoretical estimates of health utility for the 20 most prevalent co-morbid conditions (descending) in cycle 1.1 of CCHS

From: Deriving utility scores for co-morbid conditions: a test of the multiplicative model for combining individual condition scores

Two conditions reported together on CCHS   ObservedΦ HUI3 Purified† HUI3 Theoretical‡ utility
Non-Food Allergies Asthma 0.93 (0.01) 1.00 (0.01) 0.98 (0.01)
Non-Food Allergies Back Problems* 0.86 (0.01) 0.92 (0.01) 0.94 (0.01)
Food Allergies Non-Food Allergies 0.92 (0.01) 0.99 (0.01) 0.99 (0.01)
Arthritis/Rheumatism Back Problems* 0.78 (0.01) 0.83 (0.01) 0.88 (0.01)
Non-Food Allergies Migraine Headaches 0.91 (0.01) 0.98 (0.01) 0.97 (0.01)
Arthritis/Rheumatism High Blood Pressure 0.85 (0.01) 0.91 (0.01) 0.93 (0.01)
Non-Food Allergies Arthritis/Rheumatism 0.83 (0.02) 0.89 (0.02) 0.94 (0.01)
Back Problems* Migraine Headaches 0.82 (0.01) 0.88 (0.01) 0.91 (0.01)
Non-Food Allergies High Blood Pressure 0.92 (0.01) 0.98 (0.01) 0.98 (0.01)
Back Problems* High Blood Pressure 0.86 (0.02) 0.92 (0.02) 0.92 (0.01)
High Blood Pressure Diabetes 0.89 (0.02) 0.96 (0.02) 0.96 (0.01)
Non-Food Allergies Thyroid Condition 0.92 (0.01) 0.99 (0.01) 1.00 (0.01)
High Blood Pressure Heart Disease 0.91 (0.02) 0.97 (0.02) 0.95 (0.01)
Arthritis/Rheumatism Migraine Headaches 0.84 (0.02) 0.90 (0.02) 0.91 (0.01)
Food Allergies Back Problems* 0.88 (0.01) 0.94 (0.01) 0.93 (0.01)
Asthma Back Problems* 0.87 (0.02) 0.93 (0.02) 0.92 (0.01)
High Blood Pressure Migraine Headaches 0.84 (0.02) 0.90 (0.02) 0.95 (0.01)
Food Allergies Asthma 0.92 (0.01) 0.98 (0.02) 0.97 (0.01)
Arthritis/Rheumatism Thyroid Condition 0.90 (0.02) 0.96 (0.02) 0.94 (0.01)
Food Allergies Migraine Headaches 0.91 (0.01) 0.98 (0.02) 0.96 (0.01)
  1. Notes:
  2. Standard error is shown in brackets following the estimate.
  3. Conditions are shown in descending order of prevalence of the observed co-morbidity.
  4. * Back problems excluding fibromyalgia & arthritis.
  5. Φ Observed refers to the average, age-sex standardized HUI3 of the pair of conditions reported together on CCHS before being purified.
  6. † Purified refers to the average observed utility after division by the average utility of those reporting no conditions.
  7. ‡ Theoretical refers to the utility estimated from the multiplicative rule (no synergy), using the purified HUI3 of the two conditions reported alone (Table 1).
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Population Health Metrics

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