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Fig. 2 | BMC Public Health

Fig. 2

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

Fig. 2

Time series lag analysis of suspected COVID-19 admissions compared with confirmed COVID-19 admissions in Ontario. The blue dotted lines represent 95% confidence intervals (CI) for lack of trend (0.229). Values that exceed these lines represent time-lagged trends. A CCF greater than the CI indicates a probable connection between the timing of suspected COVID-19 (excluding SOI) admissions and confirmed COVID-19 admissions. A lag of − 3 indicates that confirmed COVID-19 admissions lagged suspected COVID-19 admissions by 3 days. CCF values slightly greater than the CI at − 7 and 7 days are likely due to regular weekly fluctuations in hospital usage and acute/care patterns

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BMC Public Health

ISSN: 1471-2458

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