Many patients who undergo a Hartmann's procedure do not have their stoma reversed. We analysed parameters and co-morbidity scales to assess their accuracy in predicting likelihood of undergoing reversal. Material and methods Retrospective analysis of 165 patients from a prospective colorectal database who were discharged home following a Hartmann's procedure at Barwon Health (Geelong, Australia), a regional centre, between 2002 and 2010. Parameters measured included age, sex, time to reversal, ICU admission and pathology results were recorded. Patients' ASA, POSSUM and Elixhauser co-morbidity scales were retrospectively analysed. Results Reversal of Hartmann's was performed in 74/165 (45%) patients after a median of 294 days (range 70–902). Age (mean 58.5 vs 72.9 years, p < 0.001), ICU stay (34/74 vs 66/91, p < 0.001), ASA (p < 0.002), Elixhauser co-morbidity count (mean 1.14 vs 1.92, p < 0.002) and a malignant diagnosis (9/74 vs 31/91, p < 0.002) were all associated with a decreased reversal rate on univariate analysis. Age was the only parameter found to be significant on multivariate analysis. The complication rate was 23/74, with 7/74 noted to have major complications (Clavian-Dindo III–IV). Reasons for not reversing patients included age and co-morbidities, patient refusal, and malignant disease progression. Conclusions More than half the patients undergoing a Hartmann's procedure did not proceed to a closure of their stoma. Age was the only parameter significant in predicting those patients undergoing reversal.