Table 1 The clinical characteristics of the two groups
Variables | Experimental group (n = 43) | Control group (n = 43) | t/χ2/Z | P |
|---|---|---|---|---|
Demographics | ||||
Age (years) | 57.6 ± 12.7 | 54.8 ± 11.4 | 1.076 | 0.285 |
Gender, n (%) | 0.191 | 0.662 | ||
Male | 24(55.8) | 26(60.5) | ||
Female | 19(44.2) | 17(39.5) | ||
Education level, n (%) | 0.345 | 0.841 | ||
Primary and below | 20 (46.5) | 22 (51.2) | ||
Middle school | 14 (32.6) | 14 (32.6) | ||
High school and above | 9 (20.9) | 7 (16.3) | ||
Nature of occupation, n (%) | 0.187 | 0.665 | ||
Manual worker | 22 (51.2) | 24 (55.8) | ||
Non-manual worker | 21 (48.8) | 19 (44.2) | ||
Marital status, n (%) | 0.378 | 1.000 | ||
Single | 4 (9.3) | 3 (7.0) | ||
Married | 33 (76.7) | 34 (79.1) | ||
Divorced | 3 (7.0) | 3 (7.0) | ||
Widow | 3 (7.0) | 3 (7.0) | ||
Hospitalization payment, n (%) | 0.081 | 0.776 | ||
Own expense | 7 (16.3) | 8 (18.6) | ||
Health insurance | 36 (83.7) | 35 (81.4) | ||
Religious belief, n (%) | – | 0.676 | ||
No | 39 (90.7) | 41 (95.3) | ||
Yes | 4 (9.3) | 2 (4.7) | ||
Previous non-cardiac surgery, n (%) | – | 1.000 | ||
No | 40 (93.0) | 41 (95.3) | ||
Yes | 3 (7.0) | 2 (4.7) | ||
LVEF (%), median (Q1;Q3) | 55 (50; 65) | 59 (52; 64) | 2.985 | 0.412 |
Underlying conditions | ||||
History of hypertension, n (%) | 0.091 | 0.763 | ||
No | 36 (83.7) | 37 (86.0) | ||
Yes | 7 (16.3) | 6 (14.0) | ||
History of diabetes, n (%) | 0.104 | 0.747 | ||
No | 36 (86.0) | 37 (88.4) | ||
Yes | 6 (14.0) | 5 (11.6) | ||
Abnormal thyroid function, n (%) | – | 1.000 | ||
No | 37 (90.7) | 36 (93.0) | ||
Yes | 4 (9.3) | 3 (7.0) | ||
Replacement valve type, n (%) | 1.675 | 0.196 | ||
Mechanical valve | 19 (44.2) | 25 (58.1) | ||
Biological valve | 24 (55.8) | 18 (41.9) | ||
Intubation time, (hours) | 11 (9; 15) | 10 (9; 15) | 1.293 | 0.878 |
ICU stay time, (hours) | 22 (19; 23) | 21 (18; 23) | 1.868 | 0.626 |