Table A1.
The Health States Quality Index.
| Year, Study | Variables | Total (Max = 10) |
Quality Index | |||||
|---|---|---|---|---|---|---|---|---|
| 1 | 2 | 3 | 4 | 5 | 6 | |||
| 1982, Herrington et al. | 1 | 0 | 1 | 0 | 0 | 0 | 2 | 0.2 |
| 1984, Washton et al. | 1 | 0 | 1 | 0 | 0 | 0 | 2 | 0.2 |
| 1985, Crowley | 0 | 0 | 1 | 1 | 1 | 1 | 4 | 0.4 |
| 1987, Shore | 0 | 1 | 2 | 1 | 1 | 0 | 5 | 0.5 |
| 1991, Pelton & Ikeda | 0 | 0 | 2 | 1 | 1 | 0 | 4 | 0.4 |
| 1992, Gallegos et al. | 1 | 0 | 1 | 1 | 1 | 0 | 4 | 0.4 |
| 1994, Roy | 0 | 0 | 1 | 0 | 1 | 1 | 3 | 0.3 |
| 1996, Nelson et al. (1) | 1 | 0 | 2 | 1 | 1 | 1 | 6 | 0.6 |
| 1996, Nelson et al. (2) | 1 | 0 | 2 | 1 | 1 | 1 | 6 | 0.6 |
| 1997, Roth et al. | 0 | 0 | 1 | 1 | 0 | 1 | 3 | 0.3 |
| 1999, Paris & Canavan (1) | 0 | 0 | 2 | 1 | 1 | 1 | 5 | 0.5 |
| 1999, Paris & Canavan (2) | 0 | 0 | 2 | 1 | 1 | 1 | 5 | 0.5 |
| 2004, Warhaft | 1 | 0 | 2 | 0 | 1 | 0 | 4 | 0.4 |
| 2005, Domino et al. (1) | 1 | 0 | 2 | 1 | 1 | 0 | 5 | 0.5 |
| 2005, Domino et al. (2) | 1 | 0 | 2 | 1 | 1 | 0 | 5 | 0.5 |
| 2005, Ganley et al. (1) | 1 | 1 | 2 | 1 | 1 | 0 | 6 | 0.6 |
| 2005, Ganley et al. (2) | 1 | 1 | 2 | 1 | 1 | 0 | 6 | 0.6 |
| 2006, Clark et al. | 1 | 0 | 2 | 1 | 1 | 1 | 6 | 0.6 |
| 2007, Galanter et al. | 1 | 0 | 1 | 1 | 1 | 1 | 5 | 0.5 |
| 2007, Knight et al. | 1 | 0 | 2 | 1 | 1 | 0 | 5 | 0.5 |
| 2008, Brewster et al. | 1 | 1 | 1 | 1 | 1 | 2 | 7 | 0.7 |
| 2009, DuPont et al. | 1 | 0 | 2 | 1 | 2 | 1 | 7 | 0.7 |
| 2009, Fogger & Mc-Guinness (1) | 0 | 0 | 2 | 2 | 1 | 1 | 6 | 0.6 |
| 2009, Fogger & Mc-Guinness (2) | 0 | 0 | 2 | 2 | 1 | 1 | 6 | 0.6 |
| 2011, Merlo et al. | 0 | 0 | 2 | 1 | 1 | 1 | 5 | 0.5 |
| 2013, Cross et al. | 1 | 1 | 2 | 1 | 1 | 2 | 8 | 0.8 |
| 2013, Angres et al. | 0 | 1 | 1 | 1 | 0 | 2 | 5 | 0.5 |
| 2017, Earley et al. | 1 | 1 | 1 | 2 | 2 | 2 | 9 | 0.9 |
| 2020, Bruguera et al. | 1 | 1 | 2 | 1 | 2 | 1 | 8 | 0.8 |
| Variables | 0 | 1 | 2 | |||||
| 1. Clear definition of target population and observation period | No | Yes | ||||||
| 2. Use of diagnostic criteria | Symptom based Not specified |
Use of diagnostic system reported | ||||||
| 3. Method of case selection | Not specified | Convenience sampling | Attempts all cases | |||||
| 4. Type of outcome assessment | Not specified | Register Case record |
Administered interview | |||||
| 5. Size of study area | Not specified | Small (single site) |
Broad (national or multisite) |
|||||
| 6. Type of prevalence measure | Range of follow-up duration | Average follow-up duration | Exact follow-up duration | |||||