| Variables | Overall (60 schools) |
School-scale category | |||
|---|---|---|---|---|---|
| Small-scale group (19 schools) |
Medium-scale group (22 schools) |
Large-scale group (19 schools) |
|||
| Number of students (%) | 27,403 (100.0) | 2,518 (100.0) | 9,911 (100.0) | 14,974 (100.0) | |
| School grade | first | 4,415 (16.1) | 399 (15.8) | 1,596 (16.1) | 2,420 (16.2) |
| second | 4,659 (17.0) | 435 (17.3) | 1,638 (16.5) | 2,586 (17.3) | |
| third | 4,508 (16.5) | 383 (15.2) | 1,627 (16.4) | 2,498 (16.7) | |
| fourth | 4,560 (16.6) | 426 (16.9) | 1,577 (15.9) | 2,557 (17.1) | |
| fifth | 4,585 (16.7) | 441 (17.5 | 1,696 (17.1) | 2,448 (16.3) | |
| sixth | 4,676 (17.1) | 434 (17.2) | 1,777 (17.9) | 2,465 (16.5) | |
| Mean number of student in class (range) |
29.6 (3 - 41) | 20.5 (3 - 41) | 29.3 (19 - 40) | 32.3 (23 - 41) | |
| Number of infected students (cumulative infected rate) |
12,313 (44.9) | 934 (37.1) | 4,401 (44.4) | 6,978 (46.6) | |
| School Grade | first | 1,941 (44.0) | 141 (35.3) | 670 (42.0) | 1,130 (46.7) |
| second | 2,108 (45.2) | 169 (38.9) | 749 (45.7) | 1,190 (46.0) | |
| third | 2,030 (45.0) | 119 (31.1) | 734 (45.1) | 1,177 (47.1) | |
| fourth | 2,027 (44.5) | 175 (41.1) | 694 (44.0) | 1,158 (45.3) | |
| fifth | 2,106 (45.9) | 165 (37.4) | 764 (45.0) | 1,177 (48.1) | |
| sixth | 2,101 (44.9) | 165 (38.0) | 790 (44.5) | 1,146 (46.5) | |
| Initial value of Component S |
27,219 | 2,511 | 9,852 | 14,856 | |
| Initial value of Component I |
98 | 4 | 31 | 63 | |
| Initial value of Component R |
86 | 3 | 28 | 55 | |