Study	Reason for exclusion
Baroody 2001	ALLOCATION Randomised controlled trial PARTICIPANTS Patients with perennial allergic rhinitis (not atrophic rhinitis)
Borgstein 1993	ALLOCATION Not a true RCT, compared groups were not totally similar and the study had insufficient information available
Fang 1998	ALLOCATION Clinical controlled trial (not a RCT)
Jaswal 2008	ALLOCATION Randomised controlled trial PARTICIPANTS 30 patients with primary atrophic rhinitis INTERVENTIONS Oral rifampicin plus nasal wash versus nasal submucosal placentrex injection plus nasal wash and a control group (nasal wash) OUTCOMES Excluded on the basis of insufficient duration of follow‐up. Oral rifampicin showed most promising results regarding objective, subjective and histopathological improvement with maximum disease‐free interval on regular follow‐up as compared to submucosal placentrex injections, while both performed better than control group.
Johnsen 2001	ALLOCATION Randomised cross‐over study PARTICIPANTS Non‐specific nasal dryness (not atrophic rhinitis)
Kehrl 1998	ALLOCATION Randomised, double‐blind study PARTICIPANTS Rhinitis sicca anterior (not atrophic rhinitis)
Klemi 1980	ALLOCATION: Non‐randomised double‐blind study (patients with allergic rhinitis)
Klossek 2001	ALLOCATION Not randomised
Laliberte 2000	ALLOCATION Not randomised
Mehrotra 2005	ALLOCATION Not randomised
Nemeth 2002	ALLOCATION Not randomised
Nielsen 1995	ALLOCATION: Case series revealing clinical response in 10 patients with ozaena
Schwartz 2007	ALLOCATION Not randomised
Shehata 1996	ALLOCATION A review article with no treatment arm
Stoll 1958	ALLOCATION Possibly a case series of a single agent (inplacen) response in a series of patients. The study is very old, in the German language and incomplete information information is available to conclude exclusion
Stoor 1999	ALLOCATION Not randomised

RCT: randomised controlled trial