Table 1.

Clinical characteristics of samples in present study (n = 261).

The study cohort	Number of patients, n (%)
Age, years	58.0 [45.0; 70.0]
Sex
Female	115 (44.1%)
Male	146 (55.9%)
Underlying disease
Hypertension	94(36.1%)
Diabetes	77(29.5%)
Coronary atherosclerotic heart disease	14(5.3%)
Hepatopathy	75(28.7%)
Nephropathy	21(8.1%)
Tumour	51(19.5%)
Respiratory disorders	237(90.8%)
Immunological diseases	28(10.7%)
Gastrointestinal disease	36(13.8%)
Length of hospital stay (days)	39