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. Author manuscript; available in PMC: 2013 May 1.
Published in final edited form as: Clin J Pain. 2012 May;28(4):291–299. doi: 10.1097/AJP.0b013e31822cf542

Table 1.

Comparison of participants with increased CAR (N = 12) versus flattened CAR (N = 24)

Increased AUCI CAR Flattened AUCI CAR

Mean SD Mean SD
Average Pain Intensity 72.1 17.9 50.5 24.1
Average Pain Unpleasantness 71.2 19.4 52.7 21.1
Worst Pain Intensity 85.8 11.8 67.5 30.2
Worst Pain Unpleasantness 85.7 15.8 69.5 27.1
Pain Tolerance (sec) 355.3 202.3 478.8 298.5
AUCG CAR 33.6 13.3 23.7 15.2
Perceived Stress 16.7 5.2 16.1 7.7
Sex 33.3% women 54.2% women
Type of Pain Task Completed 33.3% CPT, 33.3% HWT, 33.3% IPT 25% CPT, 25% HWT, 50% IPT

Note: CAR = cortisol awakening response; AUCI = area under the curve, increase; AUCG = area under the curve, ground; CPT = cold pressor task; HWT = hot water task; IPT = ischemic pain task; pain tolerance measured in seconds.