Study	Reason for exclusion
Davies 1999	Double‐blind randomised controlled trial of inhaled fluticasone propionate versus placebo. Cough duration was ≥ 6 weeks, although inclusion criteria was > 3 weeks. Excluded from review as chronic cough, not subacute cough
Evald 1989	Randomised controlled trial of inhaled beclomethasone dipropionate versus placebo. Cross‐over occurred at 2 weeks. Excluded from review as chronic cough, not subacute cough, cross‐over study design, and participants were adults, not children
Jartti 2007	Randomised controlled trial of oral prednisolone versus placebo. Excluded from review as oral prednisolone, not inhaled corticosteroids, and investigating effect on wheezing in virus‐positive children, not cough
Kooi 2008	Double‐blind randomised controlled trial of inhaled fluticasone propionate, montelukast or placebo in children with asthma‐like symptoms. Study inclusion criteria does not comply as no separate cough symptom data, and daily symptoms were not required for inclusion. Run‐in period of 2 weeks implemented. Excluded from review as chronic cough, not subacute cough
Kwon 2006	Not a randomised controlled trial (RCT). Study of adults with cough duration of 3 to 8 weeks who underwent bronchoprovocation and induced sputum tests to determine treatment with inhaled corticosteroids. Excluded from review as not an RCT, subacute and chronic cough, and adults, not children
Moskovljevic 2009	Double‐blind randomised controlled trial of inhaled fluticasone propionate, montelukast or placebo in children aged 8 to 18. Excluded from review as study inclusion criteria do not comply, as participants had asthma‐like symptoms, and no short‐term data were available (collected at baseline and after 3 months)
Pelkonen 2009	Randomised controlled trial of inhaled budesonide or placebo in children aged 3 to 26 months with abnormal lung function. Lower range of cough duration was 2 months, therefore excluded from review as chronic cough, not subacute cough, and abnormal lung function suggesting underlying condition
Ponsioen 2005	Double‐blind randomised controlled trial of inhaled fluticasone propionate versus placebo in adults with cough duration ≥ 2 weeks. Excluded as adult participants, not children
Pornsuriyasak 2005	Double‐blind randomised controlled trial of inhaled budesonide or placebo in participants with persistent post upper respiratory tract infection cough. All participants were aged ≥ 18 years, although inclusion criteria was > 15 years (as per written communication with author). Excluded from review as adult participants, not children
Profita 2010	Double‐bind randomised controlled trialof inhaled beclomethasone dipropionate versus placebo in children with clinical diagnosis of intermittent asthma. Excluded from review as study inclusion criteria does not comply as participants had asthma
Puhakka 1998	Double‐blind randomised controlled trial of intranasal fluticasone propionate versus placebo in adults for common cold. Excluded from review as adults, not children, and intranasal not inhaled corticosteroids, cough symptom data not differentiated
Ribeiro 2007	Double‐blind randomised controlled trial of inhaled beclomethasone dipropionate versus placebo in adults with chronic cough (duration of ≥ 8 weeks). Excluded from review as chronic cough, not subacute cough and adults, not children
Rytila 2000	Single‐blind randomised controlled trial of inhaled beclomethasone dipropionate versus placebo in adults with asthma. Excluded from review as adults, not children, and participants with asthma
Yuksel 1992	Double‐blind randomised controlled trial of inhaled beclomethasone dipropionate versus placebo in premature infants. Cough duration was greater than 4 weeks. Excluded from review as chronic cough, not subacute