Across the two trials , rates of confirmed hypoglycaemia ( SMBG < 3.1 mmol/L or severe [ needing assistance ] ) ranged from 1.0 to 1.6 episodes per patient-year and were similar for IDeg 3TW ( AM ) and IGlar OD ( estimated rate ratio [ ERR ] 1.04 , 95 % CI 0.69-1 .55 ) , but higher for IDeg 3TW ( PM ) than for IGlar OD ( ERR 1.58 , 1.03-2 .43 ) .