Efficacy of Bloodletting Therapy in Patients with Chronic Idiopathic Urticaria: A Randomized Control Trial

Table 4

Primary outcomes of treatment groups and treatment comparisons (PPA).

Outcomes	Group A, n = 51 (%)	Group B, n = 45 (%)	Group C, n = 44 (%)	χ2 test	Multiple comparison
				( value)	A&B	A&C	B&C
					χ2 ( value)	χ2 ( value)	χ2 ( value)
Week 4	38	21	19	11.596	7.824	9.659	0.109
UAS7 ≤ 7	(74.5)	(46.7)	(44.2)	(0.003)	(0.007)	(0.003)	(0.832)
Week 5	37	15	18	16.827	14.809	9.701	0.547
UAS7 ≤ 14	(72.5)	(33.3)	(40.9)	(<0.001)	(<0.001)	(0.003)	(0.515)
Week 8	30	3	1	52.277	20.829	34.362	1.001
UAS7 ≤ 14	(58.8)	(6.7)	(2.3)	(<0.001)	(<0.001)	(<0.001)	(0.616)

Per-protocol analysis; bilateral, α = 0.05; bilateral .