Table 2 Number (%) of subjects with radiographic lumbar spondylosis and low back pain and mean of stiffness index according to age
n | Radiographic lumbar spondylosis | Low back pain | Stiffness index (mean ± SD) | |||||||
|---|---|---|---|---|---|---|---|---|---|---|
KL ≥ 2 | KL = 2 | KL ≥ 3 | ||||||||
Overall | 490 | 376 | (76.7) | 186 | (37.9) | 190 | (38.8) | 98 | (20.0) | 68.8 ± 16.1 |
40-49 | 50 | 15 | (30.0) | 12 | (24.0) | 3 | (6.0) | 9 | (18.0) | 86.8 ± 13.4 |
50-59 | 111 | 77 | (69.4) | 54 | (48.7) | 23 | (20.7) | 15 | (13.5) | 76.9 ± 14.3 |
60-69 | 153 | 121 | (79.1) | 55 | (33.0) | 66 | (43.1) | 26 | (17.0) | 68.2 ± 12.6 |
70-79 | 148 | 135 | (91.2) | 53 | (35.8) | 82 | (55.4) | 38 | (25.7) | 60.8 ± 13.0 |
≥80 | 28 | 28 | (100) | 12 | (42.9) | 16 | (57.1) | 10 | (35.7) | 50.1 ± 12.9 |
Trend | p < 0.001a | p = 0.98a | p < 0.001a | p = 0.006a | p < 0.001b | |||||