Frequency of cardinal signs in the Bardet-Biedl syndrome by study
| Ref | No in study | Rod-cone dystrophy or other ocular abnormality | Obesity | Learning difficulties | Polydactyly | Hypogenitalism (males) | Renal abnormality |
|---|---|---|---|---|---|---|---|
| 14 | 273 | 93.4% | 90.8% | 87.2% | 73.6% | 74.3% | Not noted |
| 13 | 48 | 91.7% | 95.8% | 79.2% | 69.1% | 85.7% | Not noted |
| 1 | 32 | 100% | 88% | 41% | 58% | 88% | 95% |
| Our study | 109 | 93% | 72% | 62.4% | 68% | 96% | 46% |