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Table 3 Association between the use of GP services and characteristics of patients and GP practices

From: Use of GP services by patients with schizophrenia: a national cross-sectional register-based study

Patient groups Model 1 Model 2 Model 3
Schizophrenia Diabetes Whole population
(N =7,933) (N = 44,732) (N = 1,815,555)
Patient factors    
Patient male −492.62*** −437.84*** −365.04***
Patient age, years −22.30*** 2.40 0.67***
Year with the same regular GP −46.42* −35.45*** −19.50***
Comorbidity    
Diabetes mellitus 1398.68*** -- 1118.31***
Obstructive lung disease 1699.17*** 893.36*** 665.70***
Hypertension 482.67** 253.51*** 400.25***
Cardiovascular disease 863.14* 734.90*** 862.16***
GP and list characteristics    
GP male 145.33 17.33 36.47***
GP age, years - 5.21 −2.30 0.18
List size (per 100 patients) −36.22* −7.91 −4.52***
List open to new patients −168.48 121.26** 11.27
GP’s proportion of consultations with a psychological diagnosis, per percentage point 114.68*** 35.31*** 19.04***
Size of practice municipality    
> 50,000 inhabitants Ref Ref Ref
20–50,000 inhabitants 7.37 51.90 33.33***
10–20 000 Inhabitants 807.58*** 205.11*** 72.72***
< 10,000 inhabitants 1047.55*** 97.38* 69.72***
  1. Association between GP services utilisation estimated by fee-for-service (FFS) per patient in 2009 and characteristics of patients, GPs, GP practices, and practice municipality for patients aged 25–60 with schizophrenia or diabetes, and the whole population. Two-part regression models, presenting marginal effects in Norwegian Kroner (NOK), adjusted for being a specialist in family medicine (higher fees). For the population included in the regression analyses the mean annual FFS was 2,732 NOK for patients with schizophrenia, 1,963 NOK for patients with DM and 653 NOK for the whole population.
  2. Data from 3220 Norwegian GPs, criteria for inclusion are given in Table 2.
  3. *p < 0.05 **p < 0.005 ***p < 0.001.