Table 3. UNHS meta-analysis study quality scoring results.
| Study | PCHL definition | Other concerns | Clear protocol | Clear at-risk protocol | Sample bias | UNHS coverage | UNHS follow-up | Overall follow-up |
|---|---|---|---|---|---|---|---|---|
| De Capua | 2 | 1 | 1 | 1 | 1 | 0 | 1 | 1 |
| O'Connor | 2 | 1 | 1 | 1 | 1 | 1 | n/a | 1 |
| Calcutt | 2 | 1 | 1 | 1 | 0 | 1 | n/a | 1 |
| Calevo | 0 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| Magnani | 2 | 1 | 0 | 1 | 1 | 1 | 1 | 0 |
| Mason | 2 | 1 | 1 | 1 | 0 | 1 | 1 | 0 |
| Ng | 1 | 0 | 1 | 1 | 1 | 1 | 1 | 1 |
| Caluraud | 0 | 1 | 1 | 1 | 1 | 1 | 1 | 0 |
| Guastini | 1 | 1 | 1 | 1 | 1 | n/a | 1 | 0 |
| Uilenburg | 2 | 1 | 1 | 1 | 0 | 0 | 1 | 0 |
| Uus | 2 | 1 | 1 | 1 | 1 | n/a | n/a | 0 |
| White | 2 | 1 | 1 | 1 | 0 | n/a | 1 | 0 |
| Almenar Latorre | 1 | 0 | 1 | 1 | 0 | n/a | 1 | 1 |
| Gonzalez de Aledo Linos | 1 | 1 | 1 | 0 | 1 | 1 | n/a | 0 |
| Habib | 2 | 1 | 1 | 0 | 0 | 0 | 1 | 0 |
| NSW | 1 | 1 | 0 | 0 | 1 | 1 | 1 | 0 |
| Van der Ploeg | 1 | 1 | 1 | 1 | 0 | 1 | n/a | 0 |
| Watkin | 1 | 1 | 0 | 0 | 1 | 1 | n/a | 1 |
| Wessex | 1 | 1 | 1 | 1 | 0 | 0 | n/a | 1 |
| Adelola | 1 | 0 | 0 | 1 | 1 | 1 | n/a | 0 |
| Antoni | 1 | 0 | 0 | 0 | 0 | 1 | 1 | 1 |
| Bailey | 1 | 0 | 1 | 0 | 0 | 1 | 0 | 1 |
| Cao-Nguyen | 0 | 1 | 0 | 0 | 1 | 1 | n/a | 1 |
| Ghirri | 1 | 1 | 1 | 1 | 0 | n/a | n/a | 0 |
| Metzger | 1 | 1 | 1 | 0 | 0 | n/a | 1 | 0 |
| Berninger | 2 | 0 | 0 | 0 | 0 | n/a | n/a | 1 |
| Fornoff | 1 | 0 | 0 | 0 | 1 | 1 | n/a | 0 |
| Martinez | 1 | 1 | 0 | 0 | 1 | 0 | n/a | 0 |
| Mehl | 2 | 0 | 0 | 0 | 1 | 0 | n/a | 0 |
| Rohlfs | 0 | 1 | 1 | 1 | 0 | 0 | 0 | 0 |
| Van Kerschaver | 1 | 0 | 0 | 0 | 1 | 1 | n/a | 0 |
| Aidan | 0 | 1 | 1 | 0 | 0 | 0 | 0 | 0 |
| Total high quality |
11 high, 16 medium |
23 | 21 | 18 | 17 | 17 | 15 | 11 |
| Total low quality | 5 | 9 | 11 | 14 | 15 | 8 | 2 | 21 |
| Unclear | n/a | n/a | n/a | n/a | n/a | 7 | 15 | n/a |
n/a indicates unclear quality. PCHL: permanent childhood hearing loss; UNHS: universal newborn hearing screening.