Group

Number of cases

Age

Chemotherapy scheme

30 - 45

45 - 60

CEF

TEC

EC-T

Experimental group

120

64

56

38

54

28

Control group

120

62

58

35

60

25

χ²

0.067

0.067

0.177

0.602

0.218

P

0.796

0.796

0.674

0.438

0.641