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. 2012 Jun 13;2012(6):CD000523. doi: 10.1002/14651858.CD000523.pub4

1. Methodological quality assessment scheme.

Items Grades Notes
1. Was the assigned treatment adequately concealed prior to allocation? Y = method did not allow disclosure of assignment. 
 ? = small but possible chance of disclosure of assignment or unclear. 
 N = quasi‐randomised or open list/tables. Cochrane code: Clearly yes = A; Not sure = B; Clearly no = C
2. Were the outcomes of participants who withdrew described and included in the analysis (intention to treat)? Y = withdrawals well described and accounted for in analysis. 
 ? = withdrawals described and analysis not possible. 
 N = no mention, inadequate mention, or obvious differences and no adjustment.  
3. Were the outcome assessors blinded to treatment status? Y = effective action taken to blind assessors. 
 ? = small or moderate chance of unblinding of assessors. 
 N = not mentioned or not possible.  
4. Were the treatment and control group comparable at entry? Y = good comparability of groups. 
 ? = confounding small; mentioned. 
 N = large potential for confounding, or not discussed. The principle confounders were considered to be: age, sex, fracture location, pattern and displacement, and associated soft tissue injury.
5. Were the participants blind to assignment status after allocation? Y = effective action taken to blind participants. 
 ? = small or moderate chance of unblinding of participants. 
 N = not possible, or not mentioned (unless double‐blind), or possible but not done.  
6. Were the treatment providers blind to assignment status? Y = effective action taken to blind treatment providers. 
 ? = small or moderate chance of unblinding of treatment providers. 
 N = not possible, or not mentioned (unless double‐blind), or possible but not done.  
7. Were care programmes, other than the trial options, identical? Y = care programmes clearly identical. 
 ? = clear but trivial differences. 
 N = not mentioned or clear and important differences in care programmes. Examples of clinically important differences in other interventions which could act as active measures for treatment of ulna fractures were considered to be: advice on activity, exercises undertaken, timing of intervention etc.
8. Were the inclusion and exclusion criteria clearly defined? Y = clearly defined. 
 ? = inadequately defined. 
 N = not defined.  
9. Were the outcome measures used clearly defined? (by outcome measure) Y = clearly defined. 
 ? = inadequately defined. 
 N = not defined. For fracture non‐union: Was the algorithm for detection clearly described?
10. Were diagnostic tests used in outcome assessment clinically useful? (by outcome) Y = optimal. 
 N = adequate. 
 ? = not defined, not adequate. For fracture union (non‐union): 
 2 = full bridging of external callus determined radiographically, and no pain on forearm movement. 
 1 = as above but no associated test for pain. 
 0 = no mention of criteria.
11. Was the duration of surveillance clinically appropriate? (by outcome measure) Y = optimal. 
 ? = adequate. 
 N = not defined, not adequate. For fracture union (non‐union): 
 2 = 26 weeks or more post injury. 
 1 = 10‐26 weeks. 
 0 = under 10 weeks.