Patient-Controlled Analgesia (PCA): Intravenous Administration (IV-PCA) versus Oral Administration (Oral-PCA) by Using a Novel Device (PCoA® Acute) for Hospitalized Patients with Acute Postoperative Pain—A Comparative Retrospective Study

Table 4

Rate and specifications of side effects related to pain treatment in the general study population. Statistical analysis was performed by the chi-square method.

	IV-PCA		Oral-PCA		value (chi-square)
	N	%	N	%
Side effects (yes/no)					0.187
No	56	85.2	33	75.0
Yes	9	14.8	11	25
Side effects’ specifications
Dizziness	4	6.6	0	0
Fatigue	2	3.3	0	0
Nausea	0	0	10	22.7
Vomiting	6	9.8	9	20.5