Reasons for referral for audiological testing through VIHSP; 1993 birth cohort
| Reason for referral | Number of referrals* (% of total) | % of birth cohort | Number aided by end 1999‡ | PPV† | Number referred from screen per child aided |
|---|---|---|---|---|---|
| *Infants may have more than one risk factor. This table includes only cases for which data were returned prospectively to VIHSP. | |||||
| †Positive predictive value (true positives/(true + false) positives). | |||||
| ‡49 of the 134 children fitted with aids for CHI were referred through VIHSP and had sufficient documentation for this table. | |||||
| Failed behavioural screen | 3299 (53.9) | 5.03 | 18 | 0.005 | 183 |
| Risk factor identified | 2827 (46.1) | 4.31 | 31 | 0.011 | 91 |
| Family history | 1144 (18.7) | 1.74 | 7 | 0.006 | 163 |
| Perinatal infection | 89 (1.5) | 0.14 | 1 | 0.011 | 89 |
| Birth asphyxia | 134 (2.2) | 0.20 | 4 | 0.030 | 34 |
| Birth weight <1500 g | 408 (6.7) | 0.62 | 4 | 0.010 | 102 |
| Severe jaundice | 182 (3.0) | 0.28 | 2 | 0.011 | 91 |
| Congenital abnormality of the head and neck | 263 (4.3) | 0.40 | 9 | 0.034 | 29 |
| Parental concern | 577 (9.4) | 0.88 | 7 | 0.012 | 82 |
| Later/other risk factors | 349 (5.7) | 0.53 | 1 | 0.003 | 349 |