Treatment intensification with addition of an oral agent or commencement of insulin was associated with a 107 % [ odds ratio , OR : 2.07 ( 95 % confidence interval , CI : 1.95-2 .20 ) ] and 152 % [ OR : 2.52 ( 95 % CI : 2.30-2 .77 ) ] greater chance of achieving effective glycaemic control , respectively .