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Table 3 Weighted Negative Binomial Regressions of Inmate Misconduct in State Prisons (Imputed; N = 14,499)

From: Mental and physical health in prison: how co-occurring conditions influence inmate misconduct

  Inmate Misconduct
Model Non-serious Serious
Parameter IRR (SE) IRR (SE)
Acute physical health conditions, ct. 1.25*** (0.02) 1.30*** (0.05)
Chronic physical health conditions, ct. 0.91*** (0.02) 0.87*** (0.04)
Mental health conditions, ct. 1.05** (0.02) 1.07 (0.04)
Co-occurring health conditions (ref = none)
 Chronic + mental 1.48** (0.20) 1.37 (0.46)
 Chronic + acute 1.22** (0.10) 1.47* (0.26)
 Mental + acute 1.44*** (0.11) 1.40 (0.26)
 All three 1.53*** (0.14) 1.50* (0.32)
 Drug dependence (ref = no) 1.23*** (0.04) 1.68*** (0.10)
 Work assignment (ref = no) 0.89*** (0.03) 0.71*** (0.04)
 Job program (ref = no) 1.38*** (0.04) 1.48*** (0.09)
 Number of prior incarcerations 1.00 (0.00) 1.01 (0.00)
 Months served 1.00*** (0.00) 1.01*** (0.00)
 Sentence length 1.00*** (0.00) 1.00* (0.00)
Offense type (ref = violent offense)
 Property 0.87*** (0.03) 0.73*** (0.06)
 Drug 0.70*** (0.03) 0.55*** (0.05)
 Public order 0.76*** (0.04) 0.76* (0.10)
Gender (ref = male) 1.03 (0.04) 0.55*** (0.05)
Racial group (ref = white)
 Black 1.25* (0.05) 1.11 (0.02)
 Hispanic 0.93 (0.04) 0.99 (0.10)
 Other 1.09 (0.07) 1.04 (0.13)
 Age 1.00 (0.00) 1.00 (0.00)
 Education 0.96*** (0.01) 0.95*** (0.01)
 Constant 0.40*** (0.05) 0.06*** (0.01)
 Alpha 0.544   0.676  
  1. NOTE: Standard errors are in parentheses next to parameter estimates
  2. ABBREVIATIONS: IRR = incidence rate ratio, ref. = reference category in binary variable (=0);
  3. ct. = count, SE = standard error
  4. *p < .05; **p < .01; ***p < .001 (two-tailed)