INS and type 2 diabetes mellitus: Out of the 176 diabetic patients, 148 (84.1%) were non-insulin dependent diabetics (NIDDM) [mostly type 2] and 28 (15.9%) were insulin dependent diabetics (IDDM) [these were patients who required insulin from the onset (type 1) or required insulin following oral hypoglycaemic agents failure (type 11⁄2)30,31.