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. Author manuscript; available in PMC: 2021 Jun 1.
Published in final edited form as: Environ Int. 2020 Mar 31;139:105668. doi: 10.1016/j.envint.2020.105668

Table 1:

Short-lag and long-lag PM2.5 variables considered.

Variable Name Description
PM2.5 Variables Tested Long-lag Effects Daily average PM2.5 during wildfire season Total PM2.5 from months preceding flu-season (July 1 – September 30) divided by wildfire season total days (91 days)
Short-lag Effects (A) n week lag (n = 1,2,3,4) Lag PM2.5 up to n weeks before current week of influenza
(B) n week moving window sum (n = 2,3,4) Total PM2.5 up to n weeks before current week of influenza divided by n weeks
(C) Daily average PM2.5 during flu season Total PM2.5 over entirety of flu-season (October 1 – April 30) divided by flu-season total days