Table 7 Interactions between groups - Two-way ANOVA. Calculated mean of the difference of operative time (DOT) and its corresponding 95% confidence interval (95%CI) and standard deviation (SD) measured in minutes for cases with and without ENT resource nurse participation compared to cases with requested operating time lesser or greater 30 min, along with the p-value for the output of the two-way ANOVA analysis. A two-way ANOVA showed a statistically significant interaction between the effects of ENT resource nurse participation and length of surgery on DOT (F = 38.793, p = 0.0000)
From: Impact of ENT resource nurses in improving operating room efficiency
Covariate | Level | Mean (95% CI) | SD | p-Value |
|---|---|---|---|---|
ENT Nurse | Cases without an ENT Resource Nurse (Group A) | 4.34 (3.33,5.35) | 9.37 | < 0.0001 |
Cases with an ENT Resource Nurse (Group B) | −2.75 (− 3.92,-1.59) | 9.24 | ||
Case length | Cases with ROT ≤30 min (Group I) | 0.24 (− 0.91,1.39) | 9.42 | 0.0594 |
Cases with ROT > 30 min (Group II) | 1.43 (0.38,2.48) | 9.49 | ||
ENT Nurse* Case length | Group 1 - Group A*Group I | 2.15 (0.64,3.66) | 5.68 | < 0.0001 |
Group 2 - Group B*Group I | −1.19 (− 2.89,0.51) | 5.01 | ||
Group 3 - Group A*Group II | 6.53 (5.2,7.86) | 11.85 | ||
Group 4 - Group B*Group II | −4.32 (− 5.93,-2.71) | 10.85 |