Study	Reason for exclusion
Alario 1995	No oximetry. Randomly assigned to receive medication in the ED
Bateman 2000	No oximetry. Self management vs usual care
Berg 1997	No oximetry. Effects of self management programme on medication compliance, MDI chronology used, peak flow measurements and education
Burkhart 2007	No oximetry. Self management programme including education and peak flow meter
der Palen 2001	No oximetry. Self management programme including education and peak flow meter aimed at behavioural change
Ducharme 2011	No oximetry. Intervention consisting of WAP with dose counter and no pulse oximeter
Ekcert 2004	Not an RCT; a within‐participant study. Physiological experiment on well participants with asthma showing altered perception of symptoms with hypoxia
Ferraria 2000	Wrong intervention. Short‐term hospital monitoring of oximetry during airway clearance
Guendelman 2004	No oximetry. Self management programme including education and peak flow meter
Kaya 2007	Pulse oximetry performed in the ED as part of a clinical scoring correlation
Kotses 2007	No oximetry. Home monitoring with peak flow
NCT00282516	No oximetry. Self management programme including education and peak flow meter
Pieters 1990	Not an RCT. Continuous oximetry
Rakos 1985	Intervention consisting of a simple education pack to give information about asthma. No oximetry
Schermer 2002	No oximetry. Self management programme including education and peak flow meter
Silverberg 2012	Wrong population; participants admitted to the ED
Wang 1997	Randomly assigned to receive medication with oximetry measured for those on salmeterol
Yoo 1996	Randomly assigned to receive nebulised treatments. Children with bronchiolitis and asthma admitted as inpatients and treated with salbutamol nebulisers with or without oxygen