Study
|
Country
|
Design
|
Rationale described?
|
Power calculation presented?
|
Sample size calculations presented?
|
Selection criteria described?
|
Adequate concealment of randomization?
|
Assessor blinded?
|
Intention to treat analysis performed?
|
Quality score
|
Quality rating
|
---|
Barlow et al.[31]
|
UK
|
Parallel
|
Yes
|
No
|
No
|
Yes
|
Yes
|
NR
|
Yes
|
2
|
Low
|
Glasgow et al.[32]
|
USA
|
3-arm
|
Yes
|
Yes
|
Yes
|
Yes
|
Yes
|
NR
|
Yes
|
2
|
Low
|
Goeppinger et al.[33]
|
USA
|
Parallel
|
Yes
|
Yes
|
Yes
|
Yes
|
Yes
|
NR
|
NA
|
3
|
High
|
Hibbard et al.[34]
|
USA
|
Parallel
|
No
|
No
|
No
|
Yes
|
NR
|
NR
|
No
|
1
|
Low
|
Huang et al.[35]
|
Taiwan
|
3-arm
|
Yes
|
Yes
|
Yes
|
Yes
|
Yes
|
Yes
|
No
|
4
|
High
|
Lavery et al.[36]
|
Ireland
|
Parallel
|
Yes
|
No
|
No
|
Yes
|
Yes
|
Yes
|
Yes
|
3
|
High
|
Lorig et al. (2010)[37]
|
USA
|
Parallel
|
No
|
No
|
No
|
Yes
|
NR
|
NR
|
Yes
|
2
|
Low
|
Lorig et al. (2009)[38]
|
USA
|
Parallel
|
Yes
|
No
|
No
|
Yes
|
NR
|
NR
|
Yes
|
2
|
Low
|
Moriyama et al.[39]
|
Japan
|
Parallel
|
Yes
|
No
|
No
|
Yes
|
NR
|
NR
|
No
|
3
|
High
|
Wolever et al.[40]
|
USA
|
Parallel
|
Yes
|
No
|
No
|
Yes
|
NR
|
Yes
|
No
|
2
|
Low
|
- NA, not applicable; NR, not reported.