Differences of packing densities in subgroups according to percentage length of PGLA coils
| % Length | n | Mean Packing Density | P* |
|---|---|---|---|
| <25 | 5 | 19.0 ± 4.5 | NA |
| 21 | 30.1 ± 11.7 | .0118 | |
| 17 | 34.5 ± 15.1 | .0293 | |
| 13 | 32.9 − 13.9 | .0093 |
* Mann–Whitney U-test, compared with the first group (ie, % length <25).