Table 2: Univariate analysis of peri-operative factors associated with having an elective or delayed tracheostomy.
|
|
No vs. elective |
No vs. delayed |
||
|
|
RRR (95% CI) |
P value |
RRR (95% CI) |
P value |
|
ASA 1 - 2 ASA 3 - 4 |
1 6.64 (2.86-15.40) |
< 0.001 |
1 2.25 (0.88-5.76) |
0.092 |
|
APACHE II |
1.15 (1.06-1.25) |
0.001 |
1.08 (0.98-1.19) |
0.142 |
|
POSSUMP |
1.11 (1.02-1.20) |
0.014 |
0.95 (0.84-1.07) |
0.398 |
|
BMI |
1.12 (1.03-1.21) |
0.008 |
1.15 (1.05-1.27) |
0.003 |
|
Smoking status: Non-smoker Ex-smoker Current smoker |
1 10.8 (2.42-48.17) 20.0 (3.42-116.8) |
0.002 0.001 |
1 1.2 (0.45-3.22) 2.14 (0.45-10.11) |
0.717 0.335 |
|
AT |
0.78 (0.64-0.96) |
0.019 |
0.86 (0.69-1.08) |
0.189 |
|
VO2-Max |
0.86 (0.75-0.97) |
0.018 |
0.87 (0.74-1.02) |
0.075 |
|
Surgical stage Stage 2 Stage 3 |
1 15.63 (1.76-138.9) |
0.014 |
- |
- |
|
Duration of surgery |
1.01 (1.01-1.02) |
< 0.001 |
1.01 (1.00-1.01) |
0.048 |
RRR: Relative Risk Ratio; ASA: American Society of Anesthesiologists physical status classification system; APACHE: Acute Physiology and Chronic Health Evaluation; BMI: Body Mass Index; POSSUM P: Physiological and Operative Severity Score for the enUmeration of Mortality and Morbidity, Portsmouth; AT: Anaerobic Threshold; VO2 max: Maximal oxygen consumption.