Establishing the Psychometric Properties of the ICOAP Questionnaire through Intra-Articular Treatment of Osteoarthritic Pain: Implementation for the Greek Version

Table 4

	Ranks				Wilcoxon Signed-Ranks Test
		%	Mean rank	Sum of ranks		value
					Based on negative ranks	(two-tailed)
ICOAP constant pain (phase A versus phase C)
Negative	12		24.67	296.00
Positive	47	52.81	31.36	1474.00
Ties	30
					−4.450	0.000
ICOAP intermittent pain (phase A versus phase C)
Negative	16		28.03	448.50
Positive	66	74.16	44.77	2954.50
Ties	7
					−5.797	0.000
ICOAP total pain (phase A versus phase C)
Negative	14		33.43	468.00
Positive	72	80.89	45.46	3273.00
Ties	3
					−6.042	0.000