Checklist Type	Questions	Study
Analytical Cross‐Sectional Study	1. Were the criteria for inclusion in the sample clearly defined?	[1, 2, 5‐7]
	2. Were the study subjects and the setting described in detail?
	3. Was the exposure measure in a valid and reliable way?
	4. Were objective, standard criteria used for measurement of the condition?
	5. Were confounding factors identified?
	6. Were strategies to deal with confounding factors stated?
	7. Were the outcomes measure in a valid and reliable way?
	8. Was appropriate statistical analysis used?
Cohort Study	1.Were the two groups similar and recruited from the same population?	[4]
	2. Were the exposures measured similarly to assign people to both exposed and unexposed groups?
	3. Was the exposure measured in a valid and reliable way?
	4. Were confounding factors identified?
	5. Were strategies to deal with confounding factors stated?
	6. Were the groups/participants free of the outcome at the start of the study (or at the moment of exposure)?
	7. Were the outcomes measured in a valid and reliable way?
	8. Was the follow up time reported and sufficient to be long enough for outcome to occur?
	9. Was follow up complete, and if not, were the reasons to loss to follow up described and explored?
	10. Were strategies to address incomplete follow up utilised?
	11. Was appropriate statistical analysis used?
Case series	1. Were there clear criteria for inclusion in the case series?	[3, 8]
	2. Was the condition measured in a standard, reliable way for all participants included in the case series?
	3. Were valid methods used for identification of the condition for all participants included in the case series?
	4. Did the case series have consecutive inclusion of participants?
	Did the case series have complete inclusion of participants?
	5. Was there clear reporting of the demographics of the participants in the study?
	6. Was there clear reporting of clinical information of the participants?
	7. Were outcomes or follow up results of cases clearly reported?
	8. Was there clear reporting of the presenting site(s)/clinic(s) demographic information?
	9. Was statistical analysis appropriate?