Did the study address a clearly focused issue?
|
Yes
|
Yes
|
Yes
|
Was the cohort recruited in an acceptable way?
|
Yes
|
Yes
|
Can’t tell
|
Was the exposure accurately measured to minimise bias?
|
Yes
|
Yes
|
Can’t tell
|
Was the outcome accurately measured to minimise bias?
|
Yes
|
Yes
|
Can’t tell
|
(a) Have the authors identified all important confounding factors?
|
Yes
|
Yes
|
Yes
|
(b) Have they taken account of the confounding factors in the design and/or analysis?
|
Yes
|
Yes
|
Yes
|
(a) Was the follow up of subjects complete enough?
|
Not applicable
|
Yes
|
Yes
|
(b) Was the follow up of subjects long enough?
|
Not applicable
|
Yes
|
Yes
|
How precise are the results?
|
Can’t tell (no CI given)
|
Can’t tell (no CI given)
|
Can’t tell (no CI given)
|
Do you believe the results?
|
Yes
|
Yes
|
Yes
|
Can the results be applied to the local population?
|
Yes
|
Yes
|
No (study population not clearly defined)
|
Do the results of this study fit with other available evidence?
|
Yes
|
Yes
|
Yes
|
Does the study have implications for practice?
|
Yes
|
Yes
|
Yes
|