Table 3

Medical risk factors v absence of retinopathy or presence of any retinopathy

No retinopathyAny retinopathyRRCIp Value
Age (years)40.2  (14.3)36.9  (11.8)1.61.1, 2.20.006
Sex (No)
 Male1581301.31, 30.149
 Female13082
Duration (years)6.7 (3.5)11.8 (5.4)8.76.2, 14.3<0.0001
Type of DM (No)
 IDDM60361.31.0, 2.10.335
 NIDDM228176
IHD (present)16282.61.3, 5.10.005
SBP (mm Hg)125 (12.2)150 (15.6)3.72.1, 7.1<0.0001
DBP (mm Hg)70.6 (7.2)84.3 (9.9)3.62.2, 6.4<0.0001
FCG (mmol/l)8.56 (1.4)9.8 (3.6)1.81.3, 3.20.002
  • Mean (SD) for quantitative risk factors.

  • Mantel–Haensel test.