Development and assessment of a hospital admissions-based syndromic surveillance system for COVID-19 in Ontario, Canada: ACES Pandemic Tracker

Table 2 Correlations between suspected COVID-19 hospital admissions/SOIs and confirmed COVID-19 admissions between March 1, 2020 and September 21, 2020

Syndrome	Spearman’s rho	P value
Suspected COVID-19 admissions (including SOI)	0.617	<.0001
Suspected COVID-19 admissions (excluding SOI)	0.867	<.0001
General infection	0.311	<.0001
Influenza-like illness	−0.357	<.0001
Pneumonia	0.239	.0005

Spearman’s rho values ≥0.5 are considered to be highly correlated; 0.25 to 0.5 are considered to be moderately correlated and < 0.25 are considered to be weakly correlated

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