Study	Reason for exclusion
Agnew 2013	This study was interested in information leaflets rather than the treatment of respiratory tract infections with delayed antibiotics versus immediate or no antibiotics
Cates 1999	Not a randomised controlled trial
De la Poza Abad 2013	Not a randomised controlled trial
Fischer 2009	Not a randomised controlled trial
Ghebrehewet 2020	Not a randomised controlled trial
Little 2014	Not a randomised controlled trial
Newson 2009	Not a randomised controlled trial
Siegel 2003	Not a randomised controlled trial
Vouloumanou 2009	Not a randomised controlled trial
Worrall 2010	This study was had 2 delayed antibiotic arms, not immediate versus delayed