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Table 1 Comparison of baseline characteristics between diabetic and non-diabetic patients

From: Metformin use and its effect on survival in diabetic patients with advanced non-small cell lung cancer

Characteristic

Non-diabetics (n = 920)

Diabetics (n = 186)

p

% (n/N)

% (n/N)

Gender

  

0.44

 Female

47.2 (434/920)

46.2 (86/186)

 

 Male

52.8 (486/920)

53.8 (100/186)

 

Age at diagnosis (mean)

  

<0.0001

 Mean (SD)

51.2 (13.1)

64.5 (10.5)

 

Smoking history

  

0.22

 Non-smoker

40.7 (374/920)

44.1 (82/186)

 

 Smoker

59.3 (546/920)

55.9 (104/186)

 

Histology

  

0.48

 Adenocarcinoma

68.3 (628/920)

67.7 (126/186)

 

 Other

31.7 (292/920)

32.3 (60/186)

 

Disease Stage

  

0.36

 II-IIIa

5.5 (51/920)

6.5 (12/186)

 

 IIIb-IV

94.5 (869/920)

93.5 (174/186)

 

ECOG PS

  

0.31

 0–1

74.5(685/920)

78 (145/186)

 

 2–4

25.5 (235/920)

22 (41/186)

 

CNS metastases at diagnosis

  

0.09

 Absent

53.5 (492/920)

47.8 (89/186)

 

 Present

46.5 (428/920)

52.2 (97/186)

 

Basal Glucose

  

<0.0001

 Mean (SD)

105 (14.5)

170 (78.5)

 

EGFR mutation (n = 417)

  

0.09

 Positive

34.9 (123/352)

44.6 (29/65)

 

 Negative

65.1 (229/352)

55.4 (36/65)

 

KRAS mutation (n = 184)

  

0.60

 Positive

16.3. (25/30)

16.7 (5/31)

 

 Negative

83.7 (128/153)

83.9 (26/31)

 
  1. ECOG PS Eastern Cooperative Oncology Group Performance Status Score