The Korean Journal of Pain

Table 4

Comparison of patients' PPT values according to CSS and post-hoc results

PPT	CSS		P value
PPT	Yes (n = 22)	No (n = 22)	P value
Supraspinatus PPT_{Affected side}
T0	3.05 (2.4–3.43)	3 (2.43–3.56)	0.725
T1	2.53 (2.05–3.09)	3.13 (2.38–4.38)	0.042
T2	2.8 (2.6–3.31)	3.1 (2.55–4.18)	0.224
P value^a	0.031	0.212
T0-T1	0.053
T0-T2	0.778
T1-T2	0.005
Supraspinatus PPT_{Unaffected side}
T0	2.85 (2.3–3.56)	2.80 (2.55–4.11)	0.372
T1	2.65 (2.15–3.2)	3.15 (2.34–5.06)	0.152
T2	3.08 (2.7–3.4)	2.95 (2.53–4.88)	0.481
P value^a	0.102	0.549
Trapezius PPT_{Affected side}
T0	2.35 (2.13–2.56)	2.45 (2–2.94)	0.557
T1	2.18 (1.91–2.45)	2.30 (2.2–3.69)	0.028
T2	2.33 (2.09–2.68)	2.55 (2.2–3.1)	0.111
P value^a	0.028	0.014
T0-T1	0.186	0.057
T0-T2	0.283	0.033
T1-T2	0.076	0.311
Trapezius PPT_{Unaffected side}
T0	2.58 (1.99–2.85)	2.85 (2.14–3.55)	0.076
T1	2.25 (2–2.65)	2.50 (2.14–3.38)	0.088
T2	2.33 (2.1–2.95)	2.55 (2.28–3.4)	0.093
P value^a	0.020	0.588
T0-T1	0.153
T0-T2	0.823
T1-T2	0.040
Infraspinatus PPT_{Affected side}
T0	2.93 (2.15–3.28)	2.78 (2.15–3.58)	0.851
T1	2.4 (2.19–3.16)	2.85 (2.4–4.03)	0.025
T2	2.98 (2.68–3.23)	3.2 (2.48–4.58)	0.610
P value^a	0.029	0.471
T0-T1	0.237
T0-T2	0.066
T1-T2	0.011
Infraspinatus PPT_{Unaffected side}
T0	2.93 (2.35–3.34)	2.90 (2.36–3.85)	0.557
T1	2.6 (2.24–3.13)	2.78 (2.6–4.11)	0.063
T2	2.95 (2.63–3.33)	3.2 (2.65–4.63)	0.263
P value^a	0.006	0.401
T0-T1	0.117
T0-T2	0.661
T1-T2	0.006
Forearm PPT
T0	2.92 (2.35–3.56)	2.95 (2.49–3.86)	0.879
T1	2.73 (2.09–3.21)	3.2 (2.68–4.6)	0.030
T2	3.08 (2.69–3.43)	3.4 (2.7–4.8)	0.177
P value^a	0.102	0.006
T0-T1		0.051
T0-T2		0.022
T1-T2		0.578

Values are presented as median (min-max).

CSI: central sensitization inventory, PPT: pressure pain threshold.

aFriedman test, post-hoc paired comparisons: Wilcoxon rank-sum test.