Total PPT was significantly higher in the bipolar depression group than in the unipolar depression group.

Table 1: Total PPT was significantly higher in the bipolar depression group than in the unipolar depression group.

			Control Group		Unipolar Depression		Bipolar Depression	P Value
PPT
Tibia	Mean ± SD	25	26.4 ± 8.0	30	30.7 ± 8.6	36	35.7 ± 9.4	0.00^A
	Median (Min-Max)		15.0 - 52.0		19.0 - 52.0		8.0 - 63.0
Trapezius Muscle	Mean ± SD	16	18.5 ± 7.3	25	25.1 ± 8.5	27	27.5 ± 8.3	0.00^A
	Median (Min-Max)		10.0 - 43.0		5.0 - 44.0		8.0 - 52.0
Olecranon	Mean ± SD	21	22.5 ± 6.2	28	27.5 ± 8.1	32	32.6 ± 10.1	0.00^A
	Median (Min-Max)		16.0 - 43.0		14.0 - 44.0		12.0 - 55.0
Total	Mean ± SD	63	67.3 ± 18.3	82	83.3 ± 19.5	94	95.8 ± 21.7	0.00^A
	Median (Min-Max)		51.0 - 138.0		46.0 - 120.0		38.0 - 150.0

PPT: Pressure Pain Threshold; AANOVA (Turkey test).