Skip to main content
. 2001 Jan 22;2001(1):CD002989. doi: 10.1002/14651858.CD002989

Comparison 1. HEPA air filter versus sham filter.

Outcome or subgroup title No. of studies No. of participants Statistical method Effect size
1 Bronchial hyperresponsiveness (PC20) 1   Mean Difference (IV, Fixed, 95% CI) Totals not selected
2 Morning peak flow 1   Mean Difference (IV, Fixed, 95% CI) Totals not selected
3 Evening peak flow 1   Mean Difference (IV, Fixed, 95% CI) Totals not selected
4 Peak flow variability 1   Mean Difference (IV, Fixed, 95% CI) Totals not selected
5 Sleeping difficulty at 3 months 1   Peto Odds Ratio (Peto, Fixed, 95% CI) Totals not selected