Reasons for hospitalizations in patients with type 2 diabetes in the CANVAS programme: A secondary analysis

Abstract

Aim: To determine the reasons for hospitalizations in the CANagliflozin cardioVascular Assessment Study (CANVAS) programme and the effects of the sodium-glucose co-transporter-2 inhibitor canagliflozin on hospitalization. Materials and Methods: A secondary analysis was performed on the CANVAS programme that included 10 142 participants with type 2 diabetes randomized to canagliflozin or placebo. The primary outcome was the rate of total (first plus all recurrent) all-cause hospitalizations (ACH). Secondary outcomes were total hospitalizations categorized by the Medical Dictionary for Regulatory Activities hierarchy at the system organ class level, reported by investigators at each centre. Outcomes were assessed using negative binomial models. Results: Of the 7115 hospitalizations reported, the most common reasons were cardiac disorders (23.7%), infections and infestations (15.0%), and nervous system disorders (9.0%). The rate of total ACH was lower in the canagliflozin group (n = 5795) compared with the placebo group (n = 4347): 197.9 versus 215.8 participants per 1000 patient-years, respectively (rate ratio [RR] 0.92; 95% confidence interval [CI] 0.86, 0.98). Canagliflozin reduced the rate of total hospitalizations because of cardiac disorders (RR 0.81; 95% CI 0.75, 0.88). There was no significant difference between the canagliflozin and placebo groups in the rates of total hospitalizations because of infections and infestations (RR 0.96; 95% CI 0.86, 1.02) or nervous system disorders (RR 0.96; 95% CI 0.88, 1.05). Conclusions: In the CANVAS programme, the most common reasons for hospitalization were cardiac disorders, infections and infestations, and nervous system disorders. Canagliflozin, compared with placebo, reduced the rate of total ACH.