Skip to main content

Table 2 Confounding variables included in the regression model

From: Association between post-procedural hyperoxia and poor functional outcome after mechanical thrombectomy for ischemic stroke: an observational study

Characteristic mRS < 4 N = 169 mRS ≥ 4 N = 164 Significance level (p value)
Age in years 67 (55–76) 74 (66–79) < 0.01
Male sex 84 (49.7) 78 (47.6) 0.70
History of smoking 57 (33.7) 40 (24.4) 0.06
Baseline Rankin    0.02
 0 130 (76.9) 107 (65.6) 0.02
 1 27 (16.0) 36 (22.1) 0.16
 ≥ 2 12 (7.1) 20 (12.3) 0.11
Hypertension 104 (61.5) 121 (73.8) 0.02
Diabetes mellitus 40 (23.7) 55 (33.5) 0.05
History of COPD 10 (5.9) 16 (9.8) 0.19
History of CRFa 7 (4.1) 12 (7.3) 0.21
Previous anticoagulation therapy 22 (13.0) 31 (18.9) 0.14
Preprocedure GCS 15 (14–15) 14 (11–15) < 0.01
Preprocedure NIHSS 16 (11–20) 19 (16–22) < 0.01
APACHE 13 (12–17) 18 (14–24) < 0.01
Findings in TC    0.12
 Without ischemia 74 (44.3) 59 (36.4) 0.14
 Acute ischemic areasb 73 (43.7) 89 (54.9) 0.04
 Areas of ancient stroke 20 (12.0) 14 (8.6) 0.32
Mismatch 70 (60–80) 60 (40–80) < 0.01
Wake-up stroke 14 (8.3) 23 (14.0) 0.10
Time (min.) onset of symptoms to IAMT 270 (210–360) 290 (211–390) 0.17
Reperfusion degreec    < 0.01
 Successful reperfusion 164 (97.0) 144 (87.8)  
 Non-successful reperfusion 5 (3.0) 20 (12.2)  
OTI at admissiond 71 (42.0) 105 (64.0) < 0.01
  1. This table value of quantitative variables expressed as median and interquartile range. Values of qualitative variables expressed as n (%)
  2. aCreatinine clearance < 60 ml/min/1.73 m2
  3. bIncluded signs of acute ischemia and indirect signs of ischemia: hyperdense middle cerebral artery sign, hemispheric sulcus and/or insular cortex effacement, contrast attenuation, ventricular compression
  4. cSuccessful reperfusion included TICI 2b and TICI 3. Non-successful reperfusion includes TICI ≤ 2a
  5. dPatients intubated at ICU admission after IAMT