Table 2.

Effect of age, pericardial thickness, and nature of effusion on development of pericardial constriction.

Variables		Development of constrictive pericarditis (CP)		p value
		Developed CP	Has not developed CP
Age				0.409
0–10		—	3
11–20		—	2
21–30		1	3
31–40		1	9
41–50		2	2
51–60		1	1
>60		—	2
Thickened pericardium	No			0.004
Present	12	5	7
Absent	15	0	15
Nature of effusion	No			0.296
Haemorrhagic	16	4	12
Nonhaemorrhagic	11	1	10