Table 2.

Comparison of serum vitamin D between subset of patients according to categorical variables

Characters	Serum vitamin D level (mean ± SD)	P value	Mean difference	Confidence interval (CI)
Gender
Male	28.3 ± 19.6	0.85	0.49	(− 4.8, 5.8)
Female	27.9 ± 18.6
Decreased LVEF
Yes	27.1 ± 17.6	0.15	− 0.4.61	(− 10.9, 1.7)
No	31.7 ± 23.2
Clinical condition
Severe	27.2 ± 18	0.08	− 6.56	(− 14, 0.9)
Non-severe	33.7 ± 23.9
Pericardial effusion
Yes	29.1 ± 26.6	0.4	4.39	(− 7, 15.8)
No	33.5 ± 26.6
CRP
Positive	27.2 ± 17.5	0.5	− 2.11	(− 9.2, 5)
Negative	25.1 ± 12.4
ST segment changes
Yes	27.9 ± 18.3	0.2	4.90	− 2.7, 12.4)
No	32.8 ± 24.5
Blocks
Yes	34.3 ± 25.7	0.17	− 7.10	(− 17.6, 3.3)
No	27.1 ± 17.7
Arrhythmia
Yes	44.2 ± 18.1	0.09	− 16.6	(− 36.5, 3.3)
No	27.7 ± 18.1
Blood pressure
Normal	28.9 ± 21.9	0.6	1.5	(− 4, 7.1)
Hypertension	27.4 ± 17.3

LVEF left ventricular ejection fraction, CRP C-reactive protein