Variable | Mean ± Standard Deviation | P | ||
---|---|---|---|---|
The Young (n = 91) | The Middle-aged (n = 171) | The Old (n = 95) | Total | |
APD, mm | 32.0 ± 2.5 | 31.4 ± 2.6 | 31.6 ± 2.9 | .143 |
α, ° | 120.8 ± 8.4 | 122.2 ± 7.7 | 123.4 ± 9.1 | .114 |
PTS, mm | 21.0 ± 2.6 | 20.7 ± 2.9 | 21.2 ± 2.9 | .383 |
L1, mm | 12.4 ± 2.3 | 12.4 ± 2.6 | 12.8 ± 2.8 | .387 |
L2, mm | 16.7 ± 2.2 | 16.6 ± 2.5 | 17.0 ± 2.7 | .359 |
L3, mm | 9.2 ± 2.2 | 9.1 ± 2.1 | 9.0 ± 2.1 | .779 |
L1/PTS, % | 59.3 ± 9.2 | 59.8 ± 8.8 | 60.4 ± 8.3 | .719 |
L2/PTS, % | 79.7 ± 4.6 | 79.9 ± 4.4 | 80.2 ± 4.1 | .719 |
L3/PTS, % | 44.0 ± 9.6 | 43.9 ± 9.3 | 42.9 ± 9.6 | .674 |
L4, mm | 14.2 ± 2.4 | 13.9 ± 2.8 | 14.1 ± 3.1 | .727 |