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Table 1 Range of motion and predicted minimum mean differences between back pain and control groups

From: The Back Pain and Movement (B-PAM) registry; a study protocol

ROM outcome Non-back pain group Observed Mean (SD) Predicted minimum mean difference between control and back pain group
Lordosis
 30–39 years -30 (6.9) ± 2.76
 40–49 years −32 (10.1) ± 4.04
 50–65 years − 36 (12.2) ± 4.88
Standing flexion
 30–39 years 46 (11) ± 4.4
 40–49 years 48 (6) ± 2.4
 50–65 years 46 (9) ± 3.6
Standing extension
 30–39 years −26 (10) ± 4.0
 40–49 years −18 (11) ± 4.4
 50–65 years −17 (14) ± 5.6