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. 2021 Jan 12;16(1):e0245278. doi: 10.1371/journal.pone.0245278

Table 2. Means of PPT and TSP at test and retest occasions for each sequence of measurements.

Outcomes Sites Sequences of measurements Test Retest Test versus retest
Mean SD Mean SD (F) (p)
PPTa (kPa) S1 1-2-3(4) 519.50 205.61 533.48 214.72 0.608 0.443
1-2-3 522.87 206.88 534.07 211.79 0.351 0.559
2-3-4 517.20 205.77 532.58 212.41 0.548 0.466
1–2 521.79 216.07 530.32 210.10 0.289 0.596
1 536.77 222.51 527.45 209.86 0.248 0.623
LES 1-2-3(4) 547.29 199.65 551.32 169.86 0.027 0.871
1-2-3 551.09 201.84 557.17 172.31 0.059 0.810
2-3-4 549.62 207.49 559.74 175.09 0.154 0.698
1–2 549.52 196.11 548.79 174.74 0.001 0.976
1 553.79 199.52 553.18 181.51 0.001 0.981
WD 1-2-3(4) 371.67 149.28 355.95 123.96 1.072 0.311
1-2-3 370.54 149.03 358.91 129.38 0.631 0.435
2-3-4 365.02 155.98 357.37 130.20 0.225 0.640
1–2 373.63 142.29 355.61 127.02 1.285 0.269
1 381.89 141.27 359.97 134.01 1.821 0.190
WF 1-2-3(4) 368.55 121.92 354.45 115.34 0.916 0.348
1-2-3 369.47 122.57 353.77 115.16 1.089 0.307
2-3-4 361.41 127.11 349.83 115.80 0.509 0.483
1–2 371.86 126.16 356.19 115.64 0.969 0.335
1 389.94 135.22 365.73 127.69 1.518 0.230
TSPb (NRS) Hand 1-2-3 2.29 1.45 2.61 1.51 3.461 0.076
1–2 2.21 1.43 2.47 1.52 1.731 0.202
1 2.24** 1.63** 2.28** 1.71** 0.011* 0.917*
Back 1-2-3 1.92 1.32 1.95 1.58 0.015 0.905
1–2 1.85** 1.31** 1.98** 1.69** 0.016* 0.902*
1 1.96 1.32 1.91 1.71 0.022 0.884

PPT pressure pain threshold, TSP temporal summation of pain, NRS numeric rating scale, SD standard deviation, S1 spinous process of S1, LES lumbar erector spinae, WD dorsal aspect of the wrist, WF wrist flexors muscles.

* ANOVA were done on natural log-transformation of the data distributions.

** Means and SD of the non-transformed raw data are presented to facilitate interpretation.

F Fisher’s test from a one-way ANOVARM.

p one-way ANOVARM.

a n = 24.

b n = 23.