Table 4.
Single introns
| n | Variable | Mean | P | |
| Single | 784 | Length | 6253.5 | |
| Others | 50,889 | Length | 3172.8 | < 0.001 |
| Single | 784 | GC | 0.486 | |
| Others | 50,889 | GC | 0.443 | < 0.001 |
| Single | 784 | Ki | 1.051 | |
| Others | 50,889 | Ki | 1.017 | 0.086 |
Shown are the average length, GC content, and Ki for single introns versus other introns.