The independent variables

Assignment way

The tube time

1 - 49 = 1; 50 - 99 = 2; 100 - 149 = 3; 150 - 199 = 4; ≥5200

Age

18 - 39 = 1; 40 - 59 = 2; 60 - 69 = 3; 70 - 79 = 4

Basic diseases

No = 1; Liver and kidney disease =2; Hypertension =3; Anemia = 4; Diabetes =5; Heart disease = 6

Maintain hospital grade

Level 2 = 1; Level 3 = 2

Whether the skin is moist and sweaty

Yes = 1; No = 2

Whether to maintain according to regulations

Yes = 1; No = 2

Whether in the chemotherapy intermission period

Yes = 1; No = 2