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Table 4 Bivariable and multivariable regression analysis results show the independent risk factors of EPH among patients undergoing emergency surgery at JMC, 2021(N = 352)

From: Magnitude of early postoperative hypoxemia and its associated factors among adult patients who undergo emergency surgery under general anesthesia at Jimma Medical Center, Jimma, Southwest Ethiopia, 2021: a prospective observational study

Variables

Category

Frequency (%)

COR (95%CI)

AOR (95%CI)

P value

Normal

Hypoxemic

ASA (III)

Yes

5 (18.5)

22 (81.5)

2.27 (0.64, 8.1)

12.35 (4.50, 34.02)

 < 0.001

No

198 (60.9)

127 (39.1)

1

1

 

Muscular strength

Score 0

62 (39.7)

94 (60.3)

1.84 (0.99, 3.42)

2.944 (1.80, 4.82)

 < 0.001

Score 1

141 (71.9)

55 (28.1)

1

1

 

Age

 ≥ 55

23 (25.6)

67 (74.4)

3.62 (1.72, 7.61)

3.163 (1.7, 5.91)

 < 0.001

 < 55

180 (68.7)

82 (31.3)

1

1

 

Preoperative oxygen saturation

 < 95%

37 (35.2)

68 (64.8)

2.72 (1.38, 5.35)

2.371 (1.35, 4.16)

0.003

 ≥ 95%

166 (67.2)

81 (32.8)

1

1

 

BP (hypotensive)

Yes

7 (21.2)

26 (78.8)

9.15 (1.79, 46.82)

10.3 (2.40, 44.16)

0.002

No

196 (61.4)

123 (38.6)

1

1

 

Surgery duration

 ≥ 120 min

96 (47.5)

106 (52.5)

2.53 (0.74, 8.6)

2.012 (1.2, 3.51)

0.014

 < 120 min

107 (71.3)

43 (28.7)

1

1

 

Time anesthesia ended

Night

94 (53.4)

82 (46.6)

2.01 (1.1, 3.1)

1.760 (1.01, 3.05)

0.045

Day

109 (61.9)

67 (38.1)

1

1