| Methods |
Parallel‐group RCT |
| Participants |
357 participants with perennial or seasonal allergic conjunctivitis |
| Interventions |
Two treatment arms: mequitazine; levocabastine. Duration of treatment 4 weeks |
| Outcomes |
Investigators' assessment of symptoms at day 7, 14, and 28 Participants' assessment of symptoms (diary cards) |
| Country |
Not stated |
| Number randomised, gender (male:female) |
357 participants randomised |
| Age mean (SD), median, range |
Not stated |
| Notes |
Not reported when study was conducted. Full‐text paper not available, only abstract, therefore insufficient information to assess risk of bias. Source of funding and declaration of interest by the authors were not stated |
| Risk of bias |
| Bias |
Authors' judgement |
Support for judgement |
| Random sequence generation (selection bias) |
Unclear risk |
Only abstract available |
| Allocation concealment (selection bias) |
Unclear risk |
Only abstract available |
| Incomplete outcome data (attrition bias)
All outcomes |
Unclear risk |
Only abstract available |
| Selective reporting (reporting bias) |
Unclear risk |
Only abstract available |
| Other bias |
Unclear risk |
Only abstract available |
| Blinding of participants and personnel (performance bias)
All outcomes |
Unclear risk |
Only abstract available |
| Blinding of outcome assessment (detection bias)
All outcomes |
Unclear risk |
Only abstract available |
