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. 2017 Oct 30;12(10):e0187255. doi: 10.1371/journal.pone.0187255

Table 3. Results of two-part regression models of prisoners’ generalist, nursing and psychiatric healthcare utilization.

General practitioners Nurses Psychiatrists
Logistic regression Zero-truncated negative binomial regression Logistic regression Zero-truncated negative binomial regression Logistic regression Zero-truncated negative binomial regression
OR SE IRR SE OR SE IRR SE OR SE IRR SE
Predisposing characteristics
Female 1.47 (0.82) 1.38*** (0.17) 3.34 (4.14) 1.36** (0.17) 0.26* (0.21) 1.36* (0.22)
Aged 30–39 0.88 (0.18) 1.02 (0.05) 0.77 (0.19) 1.02 (0.06) 1.14 (0.26) 0.92 (0.07)
Aged 40–49 0.96 (0.25) 1.14* (0.08) 1.27 (0.49) 0.98 (0.07) 1.31 (0.36) 0.90 (0.09)
Aged 50 and older 0.61 (0.25) 1.21** (0.12) 0.62 (0.33) 1.11 (0.12) 0.72 (0.30) 0.72** (0.10)
Married 1.04 (0.24) 0.97 (0.05) 1.43 (0.46) 1.00 (0.06) 0.52** (0.14) 0.95 (0.09)
Swiss origin 1.21 (0.32) 1.10 (0.07) 1.40 (0.49) 1.19*** (0.08) 1.60* (0.43) 1.28*** (0.10)
African origin 1.20 (0.26) 0.90* (0.05) 1.67* (0.48) 0.97 (0.07) 0.33*** (0.08) 0.71*** (0.08)
Has health insurance 1.16 (0.22) 1.00 (0.05) 1.22 (0.30) 1.10* (0.06) 1.67*** (0.32) 1.02 (0.07)
Needs factors
Chronic somatic conditions
Infectious diseases 12.17*** (8.13) 1.17** (0.08) 3.85 (3.18) 1.19** (0.09) 2.16*** (0.59) 0.98 (0.09)
Musculoskeletal system 27.40*** (21.14) 1.13** (0.06) 9.79*** (8.55) 1.05 (0.06) 1.22 (0.30) 0.90 (0.07)
Nervous system - (.) 1.40*** (0.18) - (.) 1.49*** (0.23) 4.29** (3.17) 1.42 (0.37)
Circulatory system 14.53*** (11.45) 1.25*** (0.11) 9.81*** (8.17) 1.62*** (0.14) 0.79 (0.31) 1.01 (0.13)
Skin problems 2.96** (1.46) 1.09 (0.08) 1.92 (1.33) 0.96 (0.07) 0.54 (0.22) 1.00 (0.11)
Digestive system 6.14*** (3.75) 0.95 (0.07) 3.79* (3.07) 0.93 (0.07) 0.84 (0.30) 1.18* (0.12)
Respiratory system 3.36** (1.99) 1.07 (0.09) 5.34 (5.98) 1.01 (0.09) 1.29 (0.51) 0.70*** (0.08)
Endocrine system 4.19 (3.71) 1.13 (0.10) 2.68* (1.49) 1.08 (0.10) 1.26 (0.52) 1.10 (0.14)
Mental health conditions
Schizophrenia 0.68 (0.29) 0.88 (0.12) 2.02 (1.74) 1.40*** (0.18) 47.28*** (34.51) 2.37*** (0.27)
Mood disorder 0.52 (0.32) 1.06 (0.15) 0.81 (0.95) 1.09 (0.12) 27.66*** (20.47) 1.21 (0.18)
Neurotic disorder 2.99*** (1.03) 0.99 (0.06) 2.92* (1.66) 1.11* (0.06) 88.22*** (35.59) 1.03 (0.08)
Behavioral syndrome 0.80 (0.49) 0.87 (0.12) 1.35 (1.36) 0.79** (0.09) 18.10*** (11.47) 0.73* (0.13)
Personality disorder 0.68 (0.21) 0.92 (0.06) 1.03 (0.57) 1.00 (0.06) 7.29*** (2.66) 1.15* (0.09)
Mental retardation 1.51 (1.03) 0.98 (0.11) 1.76 (2.19) 1.24** (0.12) 52.73*** (51.25) 1.15 (0.12)
Substance abuse problems
Alcohol 1.27 (0.44) 1.06 (0.08) 1.15 (0.65) 1.07 (0.07) 17.07*** (8.64) 1.08 (0.08)
Illicit drugs 1.58 (0.50) 0.97 (0.06) 4.33** (2.68) 1.27*** (0.08) 22.67*** (8.75) 1.28*** (0.10)
Pharmaceuticals 1.39 (0.68) 0.97 (0.08) 2.83 (3.35) 1.35*** (0.12) 9.37*** (7.76) 1.23** (0.11)
Contextual factors
Violent crime 1.16 (0.69) 0.81* (0.09) 2.36 (2.45) 0.84 (0.10) 1.14 (0.53) 0.85 (0.11)
Sexual crime 1.62 (0.70) 0.80** (0.08) 1.43 (1.06) 0.94 (0.09) 1.48 (0.64) 1.08 (0.12)
Drug-related crime 0.56*** (0.12) 0.86*** (0.05) 0.44*** (0.12) 0.75*** (0.04) 0.90 (0.21) 0.87* (0.07)
Preventive detention 1.54* (0.39) 0.82*** (0.05) 2.05** (0.67) 0.87** (0.06) 0.71 (0.17) 1.13 (0.09)
Number of stays in 2011 1.09 (0.30) 0.99 (0.06) 1.88 (0.92) 1.05 (0.06) 1.19 (0.34) 1.00 (0.08)
Total length of stay 1.00*** (0.00) 1.00*** (0.00) 1.00*** (0.00) 1.00** (0.00) 1.00*** (0.00) 1.00*** (0.00)
Mean prison occupancy rate 1.01 (0.01) 1.01*** (0.00) 1.01 (0.01) 1.01*** (0.00) 1.01 (0.01) 1.01*** (0.00)
Stayed in Bois-Mermet prison 0.62 (0.30) 0.92 (0.09) 0.89 (0.79) 0.73*** (0.08) 0.40 (0.23) 0.77* (0.11)
Stayed in Plaine d'Orbe prison 0.46* (0.21) 0.82* (0.09) 2.79 (2.72) 0.86 (0.09) 0.40* (0.20) 1.15 (0.18)
Stayed in Croisée prison 2.21* (0.96) 0.81** (0.08) 3.75 (3.37) 1.07 (0.10) 0.52 (0.24) 1.47*** (0.20)
Stayed in La Tuilière prison 1.08 (0.57) 0.96 (0.10) 8.48* (10.50) 1.05 (0.11) 1.34 (0.71) 1.35* (0.22)
Constant 0.02*** (0.02) 0.01*** (0.00) 0.01*** (0.01) 0.04*** (0.01) 0.00*** (0.00) 0.01*** (0.00)
Observations 1664 1363 1664 1495 1664 718

OR: odds ratio (exponentiated coefficient of the regression); IRR: incidence rate ratio (exponentiated coefficient of the regression); SE: standard error. Robust standard errors in parentheses. Aged 18–29, male, convicted, other origin and other type of crime are reference categories. All regressions include the total length of stay over 2011 as an exposure variable. All detainees with nervous system disorders consulted generalist practitioners and nurses, so that the corresponding indicator predicts success perfectly.

* p < 0.1,

** p < 0.05,

*** p < 0.01.