We considered risk factors for mortality in people admitted to Counties Manukau inpatient facilities, who were also identified by medical staff to have insufficient housing.


A cohort study of people aged 15 to 75 years admitted to Counties Manukau inpatient facilities were selected between 2002 and 2014, with ICD-10 codes for insufficient housing. Diagnostic records identified people with substance use and other clinical conditions. Mortality records were used to track survival.


During the study period, 1,182 individuals were identified, 126 (10.7%) of whom died during a median follow-up of 5.7 years. Median survival of the cohort was 63.5 years (95% confidence interval (CI): 58.7 to 69.9) which is about 20 years less than the general population. Of the cohort, the strongest associations with premature mortality were among people with cannabis-related disorders (adjusted hazard ratio [aHR] 2.15; 95% CI: 1.10 to 4.22), diabetes (aHR 1.75; 95% CI: 1.05 to 2.93) and Maaori, compared to European and other ethnic groups, except Asian and Pacific (aHR 1.80; 95% CI: 1.14 to 2.85).


This population has high mortality. Within this group, Māori and people diagnosed with substance use and diabetes are at even higher risk of premature death.