Table 1.

Ages of the patients included in the study.

Years	Number of patients (percentage)
≤40	4 (0.3%)
41 to 50	44 (2.9%)
51 to 60	196 (12.7%)
61 to 70	474 (30.7%)
71 to 80	609 (39.5%)
81 to 90	201 (13%)
>90	15 (1%)