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Table 3 Predictors for FP-consultation rate (incidence rate ratios (IRRs) from multivariate Poisson regression models##).

From: Follow-up study on health care use of patients with somatoform, anxiety and depressive disorders in primary care

  FP consultation
  IRR 95% CI
Model 1 #   
Undifferentiated somatoform disorders $ * 1.3 (1.1–1.7)
Other somatoform disorders $$ 1.3 (0.7–2.2)
Depressive disorders 1.5 (1.0–2.3)
Anxiety disorders 0.9 (0.7–1.4)
CIRS somatic morbidity score   
- low score (<5) 1.0 reference
- intermediate score (5–8) 1.2 (1.0–1.5)
- high score (≥ 9) ** 1.6 (1.3–1.9)
Model 2 @   
Psychiatric disorders   
- none of the psychiatric disorders (n = 274) 1.0 reference
- a single disorder (n = 91) * 1.3 (1.1–1.6)
- two or more disorders (n = 35) * 1.7 (1.2–2.5)
CIRS somatic morbidity score   
- low score (<5) 1.0 reference
- intermediate score (5–8) 1.2 0.9–1.6
- high score (≥ 9) ** 1.6 1.3–1.9
  1. ## All models were additionally adjusted for the sampling scheme and for patients' age and gender and the number of unique somatic prescriptions in year prior to follow-up.
  2. $ Undifferentiated somatoform disorders included chronic pain disorders.
  3. $$ Other somatoform disorders: hypochondriasis, somatization disorder and conversion disorder.
  4. # Model 1: reference groups are patients without a disorder in the specified diagnostic group (including patients without any of the psychiatric disorders).
  5. @ Model 2: reference groups are patients without any of the specified disorders; a single disorder = a somatoform or depressive or anxiety disorder; two or more disorders = a somatoform disorder with co-morbid anxiety or depressive disorder, or anxiety disorder with co-morbid depressive disorder.
  6. * p ≤ 0.05; ** p ≤ 0.005