Table 2.
Assessment of methodological quality of randomised trials:
| Paper | Nobaek 2000 |
O Sullivan 2000 |
Niedzelin 2001 |
Kim 2003 |
Saggioro 2004 |
Kajander 2006 |
O' mahoney 2005 |
Gawronska 2007 |
Bausserman 2005 |
Whorwell 2006 |
Niv 2005 |
Kim 2005 |
Guyonnet 2007 |
Gade 1989 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Randomization | - | - | - | - | - | + | + | + | + | - | - | - | +* | + |
| Concealment of Allocation | - | + | - | - | - | + | + | + | + | - | - | - | +* | + |
| Double Blinding | + | + | - | + | - | + | + | + | + | + | + | + | +* | + |
| Intention to treat | - | + | + | + | + | - | + | + | - | + | + | + | + | + |
| Total | 1 | 3 | 1 | 2 | 1 | 3 | 4 | 4 | 3 | 2 | 2 | 2 | 4* | 4 |
+ Clear reporting of the methodological quality
- Not clear from the paper
* Clarified after emailing author