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Table 1 Baseline characteristics, operation-related and prognostic data of patients by LOS status (N = 311)

From: Association between preoperative hemoglobin with length of hospital stay among non-cardiac and non-obstetric surgery patients: a secondary analysis of a retrospective cohort study

Characteristic

LOS ≤ 7 days (n = 226)

LOS > 7 days (n = 85)

p-value

Age (years) (mean ± SD)

60.14 ± 14.19

61.30 ± 14.42

0.930

Gender, n (%)

  

0.049

 Male

102 (45.13)

49 (57.65)

 

 Female

124 (54.87)

36 (42.35)

 

BMI (kg/m2) (mean ± SD)

31.37 ± 13.62

31.37 ± 13.85

0.458

SBP(mmHg) (mean ± SD)

125.92 ± 19.36

123.75 ± 23.91

0.435

DBP(mmHg) (mean ± SD)

70.35 ± 12.25

67.96 ± 16.43

0.829

Heart Rate(bpm) (mean ± SD)

74.93 ± 13.66

80.18 ± 16.55

0.006

Tobacco, n (%)

120 (53.10)

43 (50.59)

0.693

Yes

   

ASA classification (%)

  

 < 0.001

 II

18 (7.96)

2 (2.35)

 

 III

169 (74.78)

50 (58.82)

 

 IV

39 (17.26)

33 (38.82)

 

Category of surgery

   

 Intraabdominal, n (%)

49 (21.68)

28 (32.94)

0.040

  Yes

   

 Intrathoracic, n (%)

13 (5.75)

14 (16.47)

0.003

  Yes

   

 Suprainguinal Vascular, n (%)

13 (5.75)

2 (2.35)

0.212

  Yes

   

 Intracranial (%)

3 (1.33)

1 (1.18)

0.916

  Yes

   

 Systemic hypertension (%)

158 (69.91)

46 (54.12)

0.009

  Yes

   

 Angina, n (%)

17 (7.52)

6 (7.06)

0.889

  Yes

   

 Coronary artery disease, n (%)

58 (25.78)

29 (34.52)

0.128

  Yes

   

 Congestive heart failure, n (%)

60 (26.55)

25 (29.41)

0.614

  Yes

   

 Arrhythmia, n (%)

84 (37.17)

32 (37.65)

0.938

  Yes

   

 Venous thromboembolism, n (%)

10 (4.42)

9 (10.59)

0.043

  Yes

   

 Asthma, n (%)

30 (13.27)

9 (10.59)

0.524

  Yes

   

 COPD, n (%)

32 (14.16)

16 (19.05)

0.290

  Yes

   

 Obstructive sleep apnea, n (%)

48 (21.24)

20 (23.53)

0.663

  Yes

   

  Diabetes, n (%)

67 (29.78)

21 (24.71)

0.377

  Yes

   

 Renal failure

(serum creatinine > 1.5 mg/dl), n (%)

55 (24.34)

23 (27.06)

0.622

  Yes

   

Anaemia, n (%)

   

 None

98 (43.36)

21 (24.71) 

 < 0.001

 Mild

54 (23.89)

14 (16.47)

 

 Moderate/severe

74 (32.74)

50 (58.82)

 

Serum creatinine (mg/dl), n (%)

1.00 (0.78 − 1.50)

1.13 (0.80 − 1.63)

0.211

Hemoglobin level(mg/dl) (mean ± SD)

12.04 ± 2.20

10.92 ± 2.22

 < 0.001

White blood cell count(× 109/l) (median [IQR])

7.52 (5.69–9.36)

7.23 (5.91–10.23)

0.505

Room Air SaO2, n (%)

189 (85.52)

72 (84.71)

0.857

Mortality, n (%)

1 (0.44)

6 (7.06)

 < 0.001

 Yes

   

Procedure length (minutes) (Median [IQR])

87.00 (41.00–141.75)

135.00 (75.50–261.75)

 < 0.001

ECHO finding

Combined PASP and RVSP (mean ± SD)

42.56 ± 11.97

46.00 ± 12.37

0.006

PHTN Severity Class, n (%)

  

0.032

No PHTN

112 (51.61)

29 (34.94)

 

Mild PHTN

89 (41.01)

47 (56.63)

 

Moderate to severe PHTN

16 (7.37)

7 (8.43)

 

EF value (mean ± SD)

59.40 ± 13.19

58.44 ± 14.46

0.601

  1. LOS Length of Stay, ASA American Society of Anesthesiologists, BMI body mass index, SBP systolic blood pressure, DBP Diastolic Blood Pressure, COPD chronic obstructive pulmonary disease, ECHO echocardiography, SD Standard Deviation, IQR interquartile range, PASP pulmonary artery systolic pressure, PHTN pulmonary hypertension, RAP right atrial pressure, RVSP right ventricular systolic pressure, EF Left Ventricular Ejection Fraction