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Mean ALs for Reference Cohorts, Ordered by Increasing Age
| Age (y) | AL (mm) | |||||
|---|---|---|---|---|---|---|
| Cohort | n | Mean | SD | Mean | SD | Range |
| Generation R | 6084 | 6.17 | 0.52 | 22.36 | 0.75 | — |
| Generation R | 5296 | 9.79 | 0.33 | 23.10 | 0.84 | — |
| ALSPAC | 2495 | 15.47 | 0.32 | 23.41 | 0.86 | — |
| Raine Study | 1335 | 20.0 | 0.46 | 23.60 | 0.93 | 20.37–27.95 |
| RS-III10 | 2957 | 56.8 | 6.4 | 23.67 | 1.26 | 21.82–25.90 |
| TwinsUK | 322 | 63.6 | 11.0 | 23.31 | 1.12 | 20.06–27.30 |
| Large unselected cataract cohort18 | 4571 | 75.9 | 9.4 | 23.55 | 1.40 | — |
