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Table 2 Univariate and multivariate Cox’s analyses of baseline EORTC QLQ-C30 for overall survival stratified by surgery status

From: Quality of life predicts survival in patients with non-small cell lung cancer

Variables

Surgery (N = 162)

Non-surgery (N = 312)

N

# of death

Crude HR (95%C.I.)

Adjusted HR (95%C.I.)

N

# of death

Crude (95%C.I.)

Adjusted HR (95%C.I.)

QLQ-C30

        

Physical Functioning (<100 as reference)

81

25

1.00

1.00

225

130

1.00

1.00

=100

81

10

0.52 (0.25-1.09)

0.61 (0.22-1.74)

84

35

0.67 (0.46-0.98)*

0.89 (0.59-1.35)

Role Functioning (<100 as reference)

27

5

1.00

1.00

105

61

1.00

1.00

=100

135

30

1.30 (0.51-3.36)

2.73 (0.66-11.39)

205

105

0.71 (0.52-0.98)*

1.08 (0.75-1.54)

Emotional Functioning (<83.33 as reference)

62

12

1.00

1.00

122

63

1.00

1.00

83.33≤EFS < 100

44

11

1.29 (0.57-2.92)

3.36 (1.05-10.69)*

85

53

1.15 (0.8-1.66)

1.20 (0.81-1.78)

=100

56

12

1.06 (0.48-2.36)

2.00 (0.67-5.96)

105

52

0.96 (0.66-1.39)

1.11 (0.75-1.66)

Cognitive Functioning (<100 as reference)

84

19

1.00

1.00

163

90

1.00

1.00

=100

78

16

0.82 (0.42-1.59)

1.21 (0.53-2.76)

149

78

1.00 (0.74-1.35)

1.11 (0.79-1.56)

Social Functioning (<100 as reference)

65

16

1.00

1.00

159

94

1.00

1.00

=100

96

19

0.76 (0.39-1.48)

1.41 (0.57-3.53)

151

73

0.57 (0.42-0.78)***

0.70 (0.50-0.99)*

Global QOL (≤50 as reference)

54

16

1.00

1.00

166

98

1.00

1.00

50 < QLS≤66.67

55

7

0.43 (0.18-1.05)

0.51 (0.17-1.53)

72

40

0.75 (0.52-1.08)

0.90 (0.61-1.32)

>66.67

52

11

0.72 (0.33-1.55)

0.98 (0.34-2.85)

73

29

0.45 (0.29-0.68)***

0.79 (0.50-1.26)

Fatigue (≤11.12 as reference)

96

15

1.00

1.00

99

46

1.00

1.00

11.12 < FAS≤33.34

36

10

1.65 (0.74-3.67)

1.78 (0.71-4.48)

111

52

1.37 (0.92-2.04)

1.49 (0.98-2.27)

>33.34

30

10

1.83 (0.82-4.06)

1.07 (0.37-3.09)

102

70

2.52 (1.73-3.68)***

2.00 (1.34-3.00)***

Pain (=0 as reference)

89

19

1.00

1.00

121

68

1.00

1.00

0 < Pain≤22.22

36

5

0.48 (0.18-1.28)

0.20 (0.05-0.78)*

73

34

0.73 (0.49-1.11)

0.82 (0.53-1.29)

>22.22

37

11

0.98 (0.47-2.07)

0.53 (0.19-1.48)

118

66

1.18 (0.84-1.66)

1.02 (0.70-1.47)

Nausea/Vomiting (=0 as reference)

147

31

1.00

1.00

248

124

1.00

1.00

>0

15

4

0.79 (0.28-2.24)

0.10 (0.02-0.56)**

63

43

1.44 (1.02-2.04)*

0.98 (0.66-1.44)

Dyspnoea (=0 as reference)

114

17

1.00

1.00

156

72

1.00

1.00

>0

48

18

1.80 (0.93-3.51)

1.69 (0.70-4.07)

155

96

1.49 (1.10-2.02)*

1.08 (0.77-1.51)

Insomnia (=0 as reference)

93

18

1.00

1.00

154

80

1.00

1.00

>0

68

17

1.29 (0.67-2.51)

1.62 (0.72-3.64)

152

82

0.93 (0.69-1.27)

0.99 (0.71-1.37)

Appetite Loss (=0 as reference)

125

28

1.00

1.00

188

84

1.00

1.00

>0

37

7

0.71 (0.31-1.63)

0.39 (0.13-1.20)

124

84

2.26 (1.66-3.07)***

1.79 (1.27-2.52)***

Constipation (=0 as reference)

123

23

1.00

1.00

209

103

1.00

1.00

>0

39

12

1.86 (0.92-3.75)

1.41 (0.51-3.92)

102

65

1.38 (1.01-1.88)*

1.12 (0.80-1.57)

Diarrhoea (=0 as reference)

147

31

1.00

1.00

263

136

1.00

1.00

>0

15

4

1.12 (0.40-3.18)

0.49 (0.07-3.27)

48

32

1.25 (0.85-1.84)

1.28 (0.85-1.95)

Financial Difficulties (=0 as reference)

119

23

1.00

1.00

216

103

1.00

1.00

>0

41

11

1.52 (0.74-3.12)

0.84 (0.28-2.55)

94

64

1.83 (1.34-2.51)***

1.55 (1.08-2.20)*

  1. Adjusted for age, sex, cancer duration, type of cancer and clinical stage (TNM stage).
  2. *:P < 0.05, **:P < 0.01, ***:P < 0.001.