Fig. 2

p-chart of hypoglycemia (< 4 mmol/L) and hyperglycemia (> 20 mmol/L). P1 denotes the start of the first phase where components 1–3 of the program was implemented across all non-critical care wards, and components 4–7 in the first phase wards. P2 to P7 denote the implementation of components of 4–7 in phase 2 to 7 respectively. Dotted lines were control limits and were drawn for periods before the start of the program (June to August 2013) and 3 months after the last phase of implementation (June to August 2016)