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Table 3 Disparities in diabetes prevalence, quality of care and outcomes in MHCs and non-MHCs

From: Mental illness related disparities in diabetes prevalence, quality of care and outcomes: a population-based longitudinal study

Measure MHCs* Non-MHCs Unadjusted OR/RR (95% CI) Adjusted OR/RR (95% CI)†
Diabetes prevalence‡, % 9.3% 6.1% 1.41 (1.37 to 1.44) 1.40 (1.36 to 1.43)
Receipt of recommended test at one year§, %     
   - HbA1c test 37.2% 42.9% 0.79 (0.76 to 0.82) 0.84 (0.80 to 0.88)
   - Microalbuminuria test 12.6% 15.4% 0.79 (0.74 to 0.84) 0.76 (0.71 to 0.82)
   - Blood lipid test 24.3% 29.5% 0.77 (0.73 to 0.80) 0.81 (0.77 to 0.85)
   - Any test 46.4% 53.2% 0.76 (0.73 to 0.80) 0.81 (0.78 to 0.85)
Receipt of recommended test during the entire follow-up period, rate per person per year     
   - HbA1c test 0.62 0.68 0.89 (0.86 to 0.91) 0.88 (0.86 to 0.90)
   - Microalbuminuria test 0.24 0.27 0.86 (0.83 to 0.89) 0.82 (0.80 to 0.85)
   - Blood lipid test 0.40 0.44 0.90 (0.88 to 0.93) 0.90 (0.88 to 0.93)
   - All tests 1.25 1.38 0.88 (0.86 to 0.90) 0.86 (0.84 to 0.88)
First hospitalisation for diabetes complications, % 45.2% 45.0% 1.08 (1.05 to 1.12) 1.20 (1.17 to 1.24)
Diabetes related mortality, % 11.8% 11.1% 1.08 (1.02 to 1.15) 1.43 (1.35 to 1.52)
All cause mortality, % 30.4% 27.1% 1.14 (1.10 to 1.19) 1.47 (1.42 to 1.53)
Entire follow-up time, y, mean (SD) 10.5 (5.9) 10.8 (5.6)   
  1. *P < 0.001 for each unadjusted comparison of diabetes measures in MHCs and non-MHCs, except first hospitalisation for diabetes complications (P = 0.701) and diabetes related mortality (P = 0.020).
  2. † Confounding variables adjusted in the multivariate analyses included the five-year age group, sex, Indigenous status, level of social disadvantage, level of residential remoteness, physical comorbidities, calendar year and whether diabetes was identified before T0 and type of diabetic treatment (the latter two variables were excluded from the multivariate analyses for diabetes prevalence).
  3. ‡ Age-sex-standardised point prevalence on 30 June 2006.
  4. § Analyses restricted to subset of patients with at least one year of follow-up (14,836 MHCs and 23,974 non-MHCs).
  5. Abbreviations: 95% CI, 95% confidence interval; MHC, mental health client; OR, odds ratio; RR, rate ratio; SD, standard deviation.