Table 1.

Weighted variation of cancer diagnostic tests stratified by period, study setting, geographic area and type of cancer

	Weighted variation	95% CI
Period
January–February March April May June–October	− 20.6%  − 40.9%  − 53.6%  − 51.8%  − 32.8%	− 90.1; 48.9  − 49.2; − 32.7  − 79.2; − 28.0  − 70.6; − 33.1  − 48.0; − 17.7
Study setting
Clinic-based Population-based	− 52.9%  − 35.6%	− 76.6; − 29.1  − 44.1; − 27.1
Geographic area
North America	− 32.2%	− 55.2; − 9.2
Europe	− 52.6%	− 96.4; − 8.7
South America	− 39.7%	− 50.8; − 28.6
Cancer site
Breast Colorectum	− 41.8%  − 47.2%	− 80.4; − 3.2  − 78.2; − 16.3

CI Confidence interval