Table 1.
Observed and adjusted prevalences as cases per 1000 live births (95% confidence intervals) for single birth cohort with age of 3 years (1995) and for aggregate of birth cohorts with ages ranging from 9 to 16 years (1982-9)
| Severity (dB HL) | Observed prevalence
|
Adjusted* prevalence
|
|||
|---|---|---|---|---|---|
| 1995 | 1982-9 | 1995 | 1982-89 | ||
| >40 | 0.91 (0.85 to 0.98) | 1.65 (1.62 to 1.68) | 1.07 (1.03 to 1.12) | 2.05 (2.02 to 2.08) | |
| 41-70 | 0.45 (0.40 to 0.50) | 0.89 (0.86 to 0.91) | 0.60 (0.54 to 0.66) | 1.21 (1.18 to 1.24) | |
| 71-95 | 0.20 (0.17 to 0.24) | 0.35 (0.33 to 0.36) | 0.22 (0.21 to 0.24) | 0.41 (0.40 to 0.42) | |
| >95 | 0.26 (0.22 to 0.29) | 0.39 (0.38 to 0.41) | 0.27 (0.26 to 0.29) | 0.44 (0.43 to 0.44) | |
| Not stated | 0.01 | 0.02 | |||
*
Adjusted by capture-recapture.