Table 6 Comparisons of the change of bone boundary area by posture between male and female subjects.
From: Gender differences in spinal mobility during postural changes: a detailed analysis using upright CT
Variables | Standing | Sitting | Delta value | P-value | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
Male | Female | Male | Female | Male | Female | p1 | p2 | p3 | ||
L1/2 (mm2) | Young | 94.9 (77.7, 101.1) | 96.9 (85.3, 101.9) | 85.0 (77.1, 104.5) | 83.9 (77.7, 96.9) | 4.5 (0.5, 6.6) | − 6.2 (− 17.5, 6.9) | 0.32 | 0.82 | 0.12 |
Elderly | 64.3 (61.0, 93.3) | 75.6 (64.5, 86.3) | 75.9 (52.1, 105.8) | 93.6 (83.9, 104.0) | − 1.3 (− 4.3, 5.9) | 14.7 (2.1, 23.7) | 0.15 | 0.09 | 0.05 | |
Whole | 79.8 (58.4, 99.6) | 85.9 (71.5 100.4) | 81.9 (66.4, 104.7) | 90.4 (80.0, 101.6) | 2.2 (− 2.7, 6.6) | 6.2 (− 6.7, 18.0) | 0.21 | 0.2 | 0.7 | |
L2/3 (mm2) | Young | 87.4 (71.5, 90.3) | 95.0 (74.7, 107.0) | 99.7 (89.3, 109.0) | 114.3 (93.5, 119.7) | 10.1 (0.9, 19.9) | 18.6 (1.1, 20.4) | 0.23 | 0.17 | 0.82 |
Elderly | 75.5 (61.0, 93.3) | 83.8 (72.8, 93.7) | 77.3 (60.3, 116.4) | 91.9 (86.0, 122.3) | 1.1 (− 4.8, 3.9) | 11.1 (2.2, 24.0) | 0.24 | 0.09 | 0.08 | |
Whole | 82.5 (65.9, 90.3) | 88.5 (74.0, 101.5) | 91.1 (70.4, 115.4) | 99.4 (91.0, 120.4) | 2.8 (− 2.6, 16.5) | 14.2 (0.9, 22.0) | 0.19 | 0.09 | 0.19 | |
L3/4 (mm2) | Young | 78.2 (74.7, 95.6) | 87.8 (76.1, 99.5) | 92.5 (89.9, 109.3) | 115.3 (104.3, 132.8) | 16.6 (13.9, 27.5) | 30.3 (15.5, 39.1) | 0.29 | 0.05 | 0.19 |
Elderly | 57.4 (45.9, 86.8) | 85.1 (73.8, 88.7) | 62.4 (49.0, 101.4) | 103.0 (86.5, 118.5) | 0.8 (− 1.9, 21.6) | 13.2 (6.4, 31.0) | 0.03* | 0.01* | 0.1 | |
Whole | 76.9 (57.7, 90.1) | 86.0 (74.4, 91.7) | 90.4 (70.0, 109.3) | 107.1 (95.2, 125.0) | 15.2 (− 0.5, 24.8) | 24.0 (9.2, 34.8) | 0.04* | 0.01* | 0.08 | |
L4/5 (mm2) | Young | 81.1 (67.0, 95.0) | 84.9 (82.0, 91.1) | 95.1 (86.5, 111.8) | 121.2 (101.8, 129.9) | 19.4 (10.7, 31.5) | 35.6 (29.2, 38.5) | 0.25 | 0.08 | 0.01* |
Elderly | 39.7 (30.3, 65.3) | 64.3 (57.3, 71.4) | 45.8 (32.4, 74.0) | 75.4 (69.1, 110.7) | 3.5 (− 2.0, 11.0) | 11.1 (1.0, 14.3) | 0.02* | 0.01* | 0.15 | |
Whole | 67.0 (39.6, 82.6) | 76.5 (63.1, 90.1) | 80.1 (46.3, 97.8) | 109.7 (74.4, 121.3) | 10.8 (0.2, 25.4) | 23.8 (9.9, 37.2) | 0.06 | 0.02* | 0.03* | |
L5/S (mm2) | Young | 76.9 (61.6, 96.7) | 82.0 (61.5, 100.5) | 81.1 (67.4, 105.7) | 96.2 (72.9, 113.7) | 4.3 (0.9, 9.0) | 5.9 (3.3, 10.9) | 0.37 | 0.27 | 0.61 |
Elderly | 49.1 (34.8, 61.6) | 61.0 (43.9, 72.9) | 58.9 (35.6, 67.3) | 65.6 (54.1, 84.5) | 2.6 (− 1.0, 8.6) | 9.4 (7.8, 11.0) | 0.16 | 0.1 | 0.08 | |
Whole | 61.6 (48.4, 85.4) | 67.5 (52.2, 84.0) | 67.4 (52.3, 87.3) | 74.4 (56.8, 99.8) | 4.2 (− 0.9, 9.0) | 7.9 (3.4, 11.2) | 0.26 | 0.15 | 0.07 | |
