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Table 3 Risk factors for long-term postoperative pneumonia in the univariate and multivariate analyses

From: Long-term postoperative pneumonia in elderly patients with early gastric cancer

Variables

Total

N (%)

C group

N (%)

P group

N (%)

Univariate analysis

Multivariate analysis

p††

Odds ratio

p†††

95% confidence interval

Age

0.440

1.290

0.529

0.580–2.890

 < 80

118 (71)

89 (72)

29 (66)

    

 80≤

49 (29)

34 (28)

15 (34)

    

Sex

0.026

2.110

0.090

0.890–5.020

 Male

109 (65)

74 (60)

35 (80)

    

 Female

58 (35)

49 (40)

9 (20)

    

Surgical procedure

0.691

   

 DG + PPG

125 (75)

93 (76)

32 (73)

    

 TG + PG

42 (25)

30 (24)

12 (27)

    

Charlson score

1.000

   

 < 3

152 (91)

112 (91)

40 (91)

    

 3≤

15 (9)

11 (9)

4 (9)

    

BMI

0.602

   

 < 22.5

82 (49)

62 (50)

20 (45)

    

 22.5≤

85 (51)

61 (50)

24 (55)

    

Current smoking history

0.860

   

 +

73 (44)

53 (43)

20 (45)

    

 −

94 (56)

70 (57)

24 (55)

    

%VC

1.000

   

 < 80

13 (8)

10 (8)

3 (7)

    

 80≤

152 (92)

112 (92)

40 (93)

    

FEV1%

0.703

   

 < 70

52 (32)

37 (30)

15 (35)

    

 70≤

113 (68)

85 (70)

28 (65)

    

Sliding Hernia

1.000

   

 +

49 (29)

36 (29)

13 (30)

    

 −

118 (71)

87 (71)

31 (70)

    

Preoperative pneumonia

0.217

1.540

0.254

0.733–3.240

 +

75 (45)

52 (42)

24 (55)

    

 −

91 (55)

71 (58)

20 (45)

    

Preoperative sarcopenia

0.000

5.380

0.003

1.770–16.30

 +

117 (70)

77 (63)

40 (91)

    

 −

50 (30)

46 (37)

4 (9)

    
  1. DG: distal gastrectomy; PPG: pylorus preserving gastrectomy; TG: total gastrectomy; PG: proximal gastrectomy; BMI: Body Mass Index = body weight (kg)/height (m)2; %VC: Vital capacity; FEV1%: Forced expiratory volume in 1 s
  2. The number and percentage of patients in each category in each group
  3. ††Variables were analyzed by a Chi-squared test
  4. †††Variables were analyzed by a logistic regression analysis