Table 1.

The basic descriptive statistics for the studied patients

Characteristic	Total (n = 330)	Group 1 (n = 233)	Group 2 (n = 97)	1 vs 2 p
Age (years)				0.312a
M ± SD	72.1 ± 7.9	72.0 ± 7.5	72.4 ± 8.9
Me (Q1; Q3)	69 (66; 77)	69 (66; 77)	71 (66; 77)
Female	148 (44.9%)	102 (43.8%)	46 (47.4%)
Comorbidities
Diabetes mellitus	159 (48.2%)	117 (50.2%)	42 (43.3%)	0.306b
Hypertension	264 (80.0%)	189 (81.1%)	75 (77.3%)	0.526b
COPD	90 (27,3%)	61 (26.2%)	28 (28.9%)	0.680b
Renal insufficiency	53 (16.1%)	30 (12.9%)	20 (20.6%)	0.255b
NYHA class				< 0.001c
I	19 (5.8%)	19 (8.2%)	0 (0.0%)
II	160 (48.5%)	121 (51.9%)	39 (40.2%)
III	133 (40.3%)	85 (36.5%)	48 (49.5%)
IV	18 (5.4%)	8 (3.4%)	10 (10.3)
Left ventricular ejection fraction (EF) (%)				0.002a
M ± SD	39.7 ± 9.4	40.5 ± 8.9	37.7 ± 10.5
Me (Q1; Q3)	40 (35; 45)	42 (35; 46)	35 (30; 45)
Min ÷ Max	15 ÷ 70	15 ÷ 65	18 ÷ 70
Frailty syndrome (TFI)	214 (64.8%)	145 (62.2%)	69 (71.1%)	0.157b
TFI physical domain				0.102a
M ± SD	3.9 ± 2.0	3.8 ± 2.0	4.2 ± 2.0
Me (Q1; Q3)	4 (2; 5)	4 (2; 5)	4 (3; 5)
Min ÷ Max	0 ÷ 8	0 ÷ 8	1 ÷ 8
TFI psychological domain				0.436a
M ± SD	1.7 ± 1.0	1.7 ± 1.0	1.8 ± 1.0
Me (Q1; Q3)	2 (1; 2)	2 (1; 2)	2 (1; 3)
Min ÷ Max	0 ÷ 4	0 ÷ 4	0 ÷ 4
TFI social domain				<0.001a
M ± SD	1.3 ± 0.9	1.2 ± 0.9	1.5 ± 0.9
Me (Q1; Q3)	1 (1; 2)	1 (1; 2)	1 (1; 2)
Min ÷ Max	0 ÷ 5	0 ÷ 3	0 ÷ 5

M mean, SD standard deviation, Me median, Q1 lower quartile (25th percentile), Q3 upper quartile (75th percentile), Min lowest value, Max highest value, a Mann–Whitney U test, b Yates’ Chi-squared test, c Pearson’s Chi-squared test, TFI Tilburg Frailty Indicator, NYHA New York Heart Association Functional classification, EF ejection fraction, COPD chronic obstructive pulmonary disease