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Table 3 Changes within groups (cases only)

From: Implementation of specific strength training among industrial laboratory technicians: long-term effects on back, neck and upper extremity pain

  Group Time Differences of least squares means P
Neck 0 1 2 1.70(0.24) <0.001
0 1 3 2.57(0.27) <0.001
0 2 3 0.87(0.27) 0.002
1 1 2 2.76(0.24) <0.001
1 1 3 2.50(0.25) <0.001
1 2 3 -0.26(0.27) 0.330
Right shoulder 0 1 2 2.13(0.29) <0.001
0 1 3 3.38(0.32) <0.001
0 2 3 1.25(0.32) <0.001
1 1 2 3.23(0.30) <0.001
1 1 3 2.38(0.32) <0.001
1 2 3 -0.84(0.34) 0.014
Upper back 0 1 2 1.62(0.30) <0.001
0 1 3 2.44(0.35) <0.001
0 2 3 0.82(0.35) 0.020
1 1 2 2.91(0.30) <0.001
1 1 3 2.69(0.30) <0.001
1 2 3 -0.22(0.33) 0.508
Low back 0 1 2 0.78(0.27) 0.005
0 1 3 2.21(0.30) <0.001
0 2 3 1.43(0.30) <0.001
1 1 2 2.52(0.30) <0.001
1 1 3 3.22(0.32) <0.001
1 2 3 0.70(0.35) 0.048
  1. Time wise Changes within groups (0 = second intervention group, 1 = first intervention group ) for Pain and disability index (DASH) and pain intensity (0–9 scale) the last 7 days in the Neck, Right Shoulder, Upper Back and Low Back (Time: 1 = baseline, 2 = 20 weeks follow-up and 3 = one-year follow up). P-value for post hoc t-tests.