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Table 1 Utilization of psychiatric and non-psychiatric services by adherence and persistence patterns

From: Association between non-compliance with psychiatric treatment and non-psychiatric service utilization and costs in patients with schizophrenia and related disorders

  Non-adherent (N = 2774) Adherent (N = 2774) B p Non-persistent (N = 1956) Persistent (N = 1956) B p
  Mean SD Mean SD    Mean SD Mean SD   
Psychiatric-related service utilization
 Total number of visits to psychiatric clinics1) 6.51 6.38 10.89 8.30 −0.469 <0.001 5.03 5.85 10.14 7.84 −4.543 <0.001
 Total number of psychiatric hospitalizations1) 2.02 3.95 2.15 4.42 −0.049 0.009 0.97 2.57 1.76 3.86 −0.749 <0.001
 Total duration of psychiatric hospitalizations2) (days) 56.60 202.61 63.61 209.34 −5.592 0.309 24.34 69.94 57.81 305.52 −32.438 <0.001
 Total duration of psychiatric medications2) (days) 210.42 131.03 354.41 66.26 −138.052 <0.001 146.36 136.95 314.34 95.96 −166.17 <0.001
Non-psychiatric related service utilization
 Total number of visits to medical clinics1) 4.62 7.34 2.62 6.98 0.354 <0.001 6.02 8.17 3.21 7.08 2.132 <0.001
 Total number of medical hospitalizations1) 1.04 2.59 0.26 1.25 1.136 <0.001 1.34 2.81 0.36 1.36 0.760 <0.001
 Total duration of medical hospitalization2) (days) 50.08 433.04 5.63 31.59 39.530 <0.001 72.70 587.91 13.82 209.13 47.869 0.001
 Total duration of medical medications2) (days) 131.75 178.52 64.87 147.37 50.437 <0.001 174.92 190.56 81.50 162.69 66.652 <0.001
 Total number of emergency room visits1) 0.31 1.30 0.14 1.08 0.737 <0.001 0.32 1.04 0.17 1.04 0.106 0.002
 Total number of surgeries1) 0.13 0.48 0.02 0.17 1.442 <0.001 0.19 0.59 0.04 0.25 0.115 <0.001
      OR P      OR P
Number of deaths during the follow-up period3) 0.03 0.17 0.02 0.14 1.199 0.324 0.03 0.18 0.01 0.11 1.950 0.007
  1. **p < 0.001; adherence is defined as the percentage of days of psychiatric prescription (PDP) ≥ 80% and non-adherence as a PDP < 80%; participants consisted of patients with schizophrenia and related disorders; 1) results were obtained by Poisson regression analysis with the general linear model; 2) results were obtained by multiple linear regression analysis; and 3) results were obtained by logistic regression analysis