Table 6.

Demographic, clinical, and psychological characteristics of sensitization groups based on index comparison methods.

	Peripheral Sensitization	Central Sensitization	Peripheral and Central Sensitization	No Sensitization	p-value
Method 1
Age (years)	32.1 [26.1; 38.1]	32.4 [25.3; 39.4]	34.6 [28.3; 40.9]	27.3 [21.6; 33.0]	0.389
Sex (%females)	14.3 [2.8; 41.2]	45.5 [21.3; 72.0]	35.0 [18.0; 56.8]	16.7 [3.5; 46.0]	0.239
Pain duration (weeks)	82.3 [20.4; 144.4]	108.4 [48.4; 168.3]	67.7 [45.3; 90.1]	28.9 [6.6; 51.2]	0.080
Pain intensity (x/10)	3.0 [1.7; 4.3]	3.8 [2.2; 5.5]	3.5 [2.6; 4.5]	2.5 [1.3; 3.6]	0.392
FPQ-9	19.5 [16.7; 22.3]	19.3 [16.4; 22.2]	23.3 [20.2; 26.4]	20.1 [17.0; 23.1]	0.120
PCS	9.3 [5.6; 13.0]	13.8 [6.8; 21.0]	13.3 [19.0; 17.5]	11.2 [5.6; 16.7]	0.503
TSK-11	23.7 [20.3; 27.2]	25.5 [23.1; 27.8]	26.0 [23.6; 28.3]	23.6 [19.2; 28.0]	0.537
Method 2
Age (years)	32.8 [27.2; 38.3]	28.4 [21.1; 35.7]	33.5 [25.9; 41.1]	31.4 [25.3; 37.4]	0.762
Sex (%females)	20.0 [7.5; 42.2]	50.0 [21.5; 78.5]	30.8 [12.4; 58.0]	21.4 [6.8; 48.3]	0.401
Pain duration (weeks)	83.6 [41.8; 125.3]	110.4 [30.4; 190.3]	56.3 [22.8; 89.8]	46.5 [14.2; 78.8]	0.212
Pain intensity (x/10)	3.0 [2.1; 3.9]	3.6 [1..2; 6.0]	3.4 [2.1; 4.8]	2.8 [1.7; 3.9]	0.785
FPQ-9	22.1 [19.4; 24.7]	21.1 [18.7; 23.5]	20.5 [16.5; 24.6]	18.9 [15.9; 22.0]	0.449
PCS	12.1 [8.6; 15.5]	14.0 [3.5; 24.5]	9.2 [4.8; 13.5]	12.0 [7.6; 16.4]	0.592
TSK-11	25.5 [23.1; 27.9]	26.8 [22.2; 31.3]	23.7 [20.3; 27.3]	23.4 [20.3; 26.6]	0.442

Values presented as % (for sex) or mean with [95% CI]. Method 1 is based on classification of PSI x CSI-PPT. Method 2 is based on classification of PSI x CSI-SHPR. Pain intensity is the average of pain reported currently, at least, and at worst.

Abbreviations: FPQ-9 – Fear of Pain Questionnaire, PCS – Pain Catastrophizing Scale, TSK-11 – Tampa Scale of Kinesiophobia.