|
Takahashi (2006) [27]
|
Random numbers generated in Excel
|
Not stated
|
Partial. Nurse assessment was blinded
|
448/550 (81%)
|
Yes
|
No
|
|
Coates (1999) [28]
|
Block randomisation
|
Not stated
|
Not stated
|
1,141/2,208 (52%)
|
Yes
|
No
|
|
Roderick (1997) [29]
|
Pairs matched by region
|
Not stated
|
Not stated
|
Intervention 86%; control 74%
|
Yes
|
Yes
|
|
Sacerdote (2006) [30]
|
Random numbers generated by computer
|
Yes
|
Outcome assessors and participants stated to be blinded
|
2,977/3,179 (93%)
|
Yes
|
Yes
|
|
Stevens (2003) [31]
|
Not stated
|
Not stated
|
Partial. Clinic staff conducting data collection were blinded
|
Intervention 89%; control 85%
|
Yes
|
No
|
|
Kristal (2000) [32]
|
Stratified by sex and age
|
Not stated
|
Not stated
|
1,205/1,459 (83%)
|
Partial
|
No
|
|
Baron (1990) [33]
|
Not stated
|
Not stated
|
Not stated
|
329/368 (89%)
|
Not stated
|
No
|
|
Fries (2005) [34]
|
Not stated
|
Not stated
|
Not stated
|
516/754 (68%)
|
Yes
|
No
|
|
Beresford (1997) [35]
|
Table of random numbers
|
Recruiters and potential participants blind to group allocation
|
No
|
1,818/2,121 (86%)
|
Yes
|
No
|
|
Gann (2003) [36]
|
Table of random numbers
|
Not stated
|
Not stated
|
177/213 (83%)
|
Yes
|
Yes
|
