Supplementary Table 1.
Number of Endoscopic Procedures and Diagnoses in Hong Kong During the Study Period (October 1–March 31, 2016–2020)
| Endoscopic procedures and diagnoses | Oct 2016–Mar 2017 |
Oct 2017–Mar 2018 |
Oct 2018–Mar 2019 |
Oct 2019–Mar 2020 |
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|---|---|---|---|---|---|---|---|---|---|---|
| Before week of turning point (Jan 21–27) |
After week of turning point (Jan 21–27) |
|||||||||
| Whole period | Average per week | Whole period | Average per week | Whole period | Average per week | Whole period | Average per week | Whole period | Average per week | |
| Upper endoscopy, n | 46,129 | 1774.2 | 47,588 | 1830.3 | 48,302 | 1857.8 | 28,932 | 1808.3 | 8878 | 887.8 |
| Lower endoscopy, n | 31,142 | 1197.8 | 31,835 | 1224.4 | 29,522 | 1135.5 | 19,433 | 1214.6 | 4909 | 490.9 |
| New gastric cancer, n | 629 | 24.2 | 562 | 21.6 | 587 | 22.6 | 374 | 23.4 | 123 | 12.3 |
| New colorectal cancer, n | 2484 | 95.5 | 2388 | 91.8 | 2314 | 89.0 | 1469 | 91.8 | 580 | 58.0 |
| Positive rate for gastric cancer per 1000 upper endoscopies | 13.6 | — | 11.8 | — | 12.2 | — | 12.9 | — | 13.9 | — |
| Positive rate for colorectal cancer per 1000 lower endoscopies | 79.8 | — | 75.0 | — | 78.4 | — | 75.6 | — | 118.2 | — |