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Table 6 Multivariate Tobit regression models on Direct Costs (Primary and Specialist Services)

From: Impact of IPDE-SQ personality disorders on the healthcare and societal costs of fibromyalgia patients: a cross-sectional study

  Primary care services Specialist services
No PD PD No PD PD
(Intercept)-- 87.2 (66.5, 113.2) 138.3 (106.5, 186.4) 146.2 (107.5, 184.7) 214.3 (151.5, 298.7)
Age −1.2 (−3.4, 0.9) −3.0 (−8.2, 0.7) 3.9 a (0.5, 7.0) −9.3 a (−16.6, −2.4)
Years with diagnosis 2.8 (−0.9, 8.0) −1.2 (−6.0, 3.6) −2.6 (−6.2, 0.6) 0.8 (−8.4, 7.9)
FIQ 1.7 (−0.2, 3.0) 4.8 a (1.2, 10.0) 3.9 a (1.8, 6.2) 9.0 a (3.4, 16.3)
  1. Note: Transformed Tobit coefficients with bootstrapped 95 % CIs (aindicating statistically significant coefficients –alpha = 0.05-). Explanatory variables centred to the sample mean. Accordingly, Intercept approximates the cost of a “mean individual” (aged 55.22, with 14.2 years with diagnosis, and a FIQ score of 56.36). For clarity, significant results are in bold
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