Questions | Trials with Comparison Groups | Trials with evaluation before & after | Observational |
---|---|---|---|
Is the strategy defined? | Yes | Yes | Yes |
Is there a methods section? | Yes | Yes | Yes |
Are the strategy and methods sections defined in a comprehensive way? | Yes | Yes | Yes |
Is the study question clearly defined? | Yes | Yes | No |
Are outcomes/outputs clearly defined? | Yes | Yes | No |
Can outcomes be attributed to interventions? | Yes | Yes | No |
Is the explanation of the target population sufficient? | Yes | Yes | Yes |
Is the target population studied appropriate? | Yes | Yes | No |
Was the method used to obtain cases and controls explained? | Yes | No | No |
Was randomization used to select cases and controls? | Yes | No | No |
Was the method of selecting cases and controls appropriate? | Yes | No | No |
Was a method for checking immunization status described? | Yes | Yes | Yes |
Was the method for determining sample size provided? | Yes | Yes | No |
Have confounders been identified? | Yes | Yes | No |
Were the confounders taken into consideration? | Yes | Yes | No |
Was the time frame of the study defined? | Yes | Yes | No |
Is the time frame sufficient for the intervention to have an impact? | Yes | Yes | Yes |
Did the authors make comments regarding limitations of the strategy? | Yes | Yes | Yes |
Did the authors compare results with similar studies? | Yes | Yes | Yes |
Was adequate data analysis conducted? | Yes | Yes | Yes |
Was the response rate adequate? | No | Yes | No |