Table 2

Clinical characteristics of patients in different age-at-onset groups

nDuration of diabetes (years)PDR (%)Duration to PDR (years)A1C (%)MAP (mmHg)C-peptide <0.033 nmol/l (%)BMI (kg/m2)Mortality (%)
Age-at-onset group
0–4 years16831.12 (29.5–32.7)*47.0 (39.5–54.6)¶24.3 (22.7–25.9)¶8.8 (8.5–9.0)¶96.6 (94.9–98.3)96.4 (92.4–98.7)¶24.8 (24.3–25.4)8.9
5–14 years54626.1 (25.1–27.0)*38.8 (34.7–42.9)¶20.1 (19.2–21.1)*8.5 (8.4–8.6)97.3 (96.4–98.2)89.9 (87.4–92.5)24.9 (24.6–25.2)9.3
>15 years40321.0 (19.9–22.1)*18.9 (15.0–22.7)*21.6 (19.8–23.3)8.3 (8.1–8.4)*99.0 (97.9–100.1)79.2 (75.2–83.1)*25.4 (25.0–25.8)8.2
All patients1,11725.0 (24.4–25.7)32.9 (30.0–35.6)21.3 (20.6–22.1)8.4 (8.4–8.5)97.8 (97.2–98.5)87.0 (85.0–89.0)25.0 (24.8–25.3)8.9
  • Data are means (95% CI) unless indicated otherwise. One-way ANOVA, adjusted for multiple comparisons (Sidak). Differences in proportions were compared with the Kruskal-Wallis test. *,¶Significant difference (P < 0.05) between two groups. *Significant difference between all three groups (P < 0.05). MAP, mean arterial pressure; PDR, proliferative diabetic retinopathy.