Skip to main content

Table 1 Comparison of psychophysical responses among knee OA patients (n = 35) and pain-free controls (n = 39)

From: Variability in conditioned pain modulation predicts response to NSAID treatment in patients with knee osteoarthritis

  Knee OA (n = 35) Controls (n = 39)
Variables of Interest Assessed During the QST Session
Current Clinical Pain (0–100) 34.3 ± 26.2** 0 ± 0
Anxiety during QST (0–100) 23.1 ± 20.7 ** 5.5 ± 7.1
Mechanical and Cold Pressor Responses
PPTh (KPa)- Trapezius 275.1 ± 142.3* 346.4 ± 130.0
PPTh (KPa)- Thumb 227.5 ± 91.0** 339.9 ± 94.6
PPTh (KPa)- Knee 315.9 ± 158.0** 510.2 ± 188.6
Cuff Pain Threshold (mmHg) 129.3 ± 51.4* 168.6 ± 76.1
Cold Pain Tolerance (sec) 29.7 ± 30.8** 72.3 ± 60.5
Maximum Cold Pain (0–100) 75.9 ± 21.7 73.8 ± 22.2
CPM Index 118.7 ± 36.8* 142.5 ± 28.6
Other Mechanical and Cold Pressor Data Appear in Figs. 1 and 2
  1. QST quantitative sensory testing, PPTh pressure pain threshold, KPa Kilopascales, CPM conditioned pain modulation
  2. *p < 0.05 for the group comparison
  3. **p < 0.01 for the group comparison