Age group 4K ® score Time frame Time frame Total P-value
April-July 2019 – Control group April-July 2020 – study group
≤65 ≤ 20% 216 (83.4%) 143 (67.8%) 359 (76.4%) <0.05
>20% 43 (16.6%) 68 (32.2%) 111 (23.6%)
≤33% 246 (95%) 176 (83.4%) 422 (89.8%) <0.05
>33% 13 (5%) 35 (16.6%) 48 (10.2%)
>65 ≤ 20% 310 (67.1%) 161 (67.4%) 471 (67.2%) P=0.944
>20% 152 (32.9%) 78 (32.6%) 230 (32.8%)
≤33% 382 (82.7%) 194 (81.2%) 576 (82.2%) P=0.62
>33% 80 (17.3%) 45 (18.8%) 125 (17.8%)