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. Author manuscript; available in PMC: 2013 Jun 19.
Published in final edited form as: Spine J. 2011 Apr;11(4):308–315. doi: 10.1016/j.spinee.2011.02.010

Table 2.

Age-specific means of studied parameters and estimation of association with age.

<40 40–49 50–59 60+ P for trend

N 23 40 55 36
LA (mean±SD) 45.9 (10.2) 46.4 (10.1) 47.4 (10.7) 46.8 (10.0) 0.2800
ΣB (mean±SD) 6.1 (8.6) 6.7 (8.3) 4.0 (11.6) 3.6 (11.7) 0.6400
ΣD (mean±SD) 38.9 (10.0) 39.0 (10.4) 42.2 (9.6) 41.0 (11.8) 0.9554

The p-values in the above table are the result of linear relationship test between each outcome and age groups.