Table 5 Quality Assessment of Randomized Controlled Trials (using Jadad assessment criteria)
Jadad Quality Criteria | Newham 1995[38] | Oldham 1991[41] | Taiwan 1997-98[56] | Los Angeles 1998-2000[62] | Los Angeles 1998-2000[36] | Singapore 1994-96[39] | Seattle/Vancouver 1999[52] | Seattle 2000-2001[72] |
|---|---|---|---|---|---|---|---|---|
Was the study described as randomized? | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
Was the method used to generate randomization described and appropriate?# | NR | NR | 1 | 1 | 1 | 1 | 1 | 1 |
Was the study described as double blind? | NR | NR | NR | Interviewer blinded | Assessor blinded | NR | NR | NR |
Was the method of double blinding described and appropriate?* | NR | NR | NR | NR | NR | NR | NR | NR |
Was there a description of withdrawals and dropouts? | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
Total Jadad Score | 2 | 2 | 3 | 3 | 3 | 3 | 3 | 3 |