[Retracted] The Clinical Efficacy of Cedilanid and Isosorbide Dinitrate plus Pericardial Dissection for Chronic Constrictive Pericarditis in the Elderly and Its Influence on Plasma Endothelin, Atrial Natriuretic Peptide, and Systemic Immune-Inflammation Index

Table 3

Comparison of treatment efficacy among the three groups.

Groups	n	Markedly effective	Effective	Ineffective	Total effectiveness (%)
Control group A	30	13	11	6	22 (80.33)
Control group B	30	18	9	3	26 (90.00)
Combination group	30	23	6	1	29 (96.67)
x^2					6.049
					0.014