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. 2006 Jun;47(3):459–468.

Table 2.

Adjusted R2 of three alternative models predicting primary health care consultations and expenditures prospectively in 2000*

Adjusted R2 (%) (N = 10 000)
Models consultations expenditures
  age and sex                 3.9                 8.9
  age, sex, and two diagnoses†                 20.0                 26.7
  age, sex, and seven-diagnoses groups‡                 22.0                 28.1

*Individual variation (%) in use of services explained; P<0.001 for all models.

†The model includes age, sex, and dummies, presence of hypertension and diabetes mellitus.

‡The model includes age, sex and dummies; presence of hypertension, diabetes mellitus, obstructive bronchitis syndrome, chronic bronchitis, asthma, and alcoholism.