Table 1 Comparison of demographics and clinical data between DNR and non-DNR groups at 30 days after surgery

Age (years)

68(65.75–70.25)

67(65–70)

0.904

Sex (Male/Female)

11/15

57/71

0.835

Body mass index, kg/m²

23.25 ± 3.07

24.61 ± 3.28

0.863

Education(years)

9(8–12)

9(7–12)

0.897

Smoking

10(38.46%)

46(36.72%)

0.867

ASA status

0.704

 I

0

2(1.56%)

 II

23(88.46%)

103(80.47%)

 III

3(11.54%)

23(19.53%)

Medical history

 Hypertension

12(46.15%)

71(55.47%)

0.385

 Diabetes mellitus

9(34.62%)

21(16.41%)

0.033*

 Hyperlipidemia

2(7.69%)

11(8.59%)

1.000

 History of cerebrovascular accident

8(30.77%)

10(7.81%)

0.003*

 Coronary artery disease

5(19.23%)

22(17.19%)

1.000

previous major surgery history

7(26.92%)

12(9.38%)

0.031*

Preoperative pulmonary infection

5(19.23%)

33(25.78%)

0.480

Malignant/benign disease

21(80.77%)

116(90.63%)

0.263

Surgical data

Surgical approach

0.87

 Open surgery

3(11.53%)

17(13.28%)

 Thoracoscopic surgery

26(89.66%)

108(86.4%)

Resection range

0.532

 Non-anatomic wedge resection

0

6(4.69%)

 Segmentectomy

6(23.08%)

17(13.28%)

 Sublobar resections

7(26.92%)

37(28.91%)

 Lobectomy

10(38.46%)

53(41.41%)

 Pulmonary bilobectomy

3(11.54%)

13(10.16%)

Anesthesia time(min)

189(152–245)

184(152–230)

0.931

Operation time(min)

118(83–184)

122(89–160)

0.944

Urine(ml)

200(100–400)

200(100–325)

0.336

Blood loss (ml)

50(20–100)

50(20–100)

0.669

Chest tube duration

3(3–4)

4(3–5)

0.189

Paravertebral block with catheter use

8(30.77%)

39(30.47%)

0.976