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Table 2 Number of health facilities included in the analysis by year and IRS status

From: Retrospective evaluation of the effectiveness of indoor residual spray with pirimiphos‐methyl (Actellic) on malaria transmission in Zambia

Category 2013 2014 2015 2016 2017
Included in descriptive analysis
No IRS 481 481 262 238 226
IRS 0 0 168 191 202
IRS w/ mSpray 0 0 51 52 53
Included in regression
No IRS 392 392 207 189 180
IRS 0 0 137 153 164
IRS w/ mSpray 0 0 48 50 48