Intervention	Treatment class	Number of patients randomised to each treatment
1	Placebo	Placebo	1136
2	Azithromycin 250 mg once daily	Macrolide	459
3	Azithromycin 250 mg once daily three times per week	Macrolide	62
4	Doxycycline 100 mg once daily	Tetracycline	55
5	Moxifloxacin 400 mg once daily (5 days every 4 weeks)	Quinolone	25
6	Erythromycin 125 mg three times per day	Macrolide	16
7	Moxifloxacin 400 mg once daily (5 days every 8 weeks)	Quinolone	503
8	Azithromycin 500 mg once daily three times per week	Macrolide	41