Outcome
Type |
Measure |
Description |
Time frame |
Safety issue |
Other |
Quality of Recovery-15 |
Data will be summarized using standard descriptive statistics by reporting mean (SD) or median (IQR) for continuous variables and frequency and percentages for categorical variables. Continuous variables will be compared between the two treatment arms using the two-sample t-test or the Wilcoxon rank sum test as appropriate. Categorical variables will be compared between the two treatment arms using the chi-square test or the Fisher's exact test. The questionnaire includes 15 items, each scored on a scale of 1 - 10, with a total higher score reflecting better outcomes. |
At 24 hours after surgery |
|
Primary |
Overall Benefit of Analgesia Score (OBAS) |
The mean OBAS score between the two groups will be presented along with the upper limit of the 95% confidence bound for the mean difference. Will conclude non-inferiority if this upper limit is less than the predefined limit for noninferiority. Multivariable regression models will be fit to assess for differences in outcomes if there are unbalanced baseline covariates in the two treatment arms. Each of 7 questions are scored on a scale of 0 - 4 with a lower total score reflecting a better outcome. |
Up to 24 hours after surgery |
|
Secondary |
Cumulative 24 hour narcotic consumption |
Will be measured in morphine metabolic equivalents. Data will be summarized using standard descriptive statistics by reporting mean (standard deviation [SD]) or median (interquartile range [IQR]) for continuous variables and frequency and percentages for categorical variables. Continuous variables will be compared between the two treatment arms using the two-sample t-test or the Wilcoxon rank sum test as appropriate. Categorical variables will be compared between the two treatment arms using the chi-square test or the Fisher's exact test. |
Up to 24 hours after surgery |
|
Secondary |
Post-operative pain scores |
Post-operative pain scores, including rest and movement, will be measured at 4, 8, 16 and 24 hours after surgery. Data will be summarized using standard descriptive statistics by reporting mean (SD) or median (IQR) for continuous variables and frequency and percentages for categorical variables. Continuous variables will be compared between the two treatment arms using the two-sample t-test or the Wilcoxon rank sum test as appropriate. Categorical variables will be compared between the two treatment arms using the chi-square test or the Fisher's exact test. Postoperative pain is scored on a scale of 0 - 10, with the lower score showing a better outcome. |
Up to 24 hours after surgery |
|
Secondary |
Time to first analgesic request |
Data will be summarized using standard descriptive statistics by reporting mean (SD) or median (IQR) for continuous variables and frequency and percentages for categorical variables. Continuous variables will be compared between the two treatment arms using the two-sample t-test or the Wilcoxon rank sum test as appropriate. Categorical variables will be compared between the two treatment arms using the chi-square test or the Fisher's exact test. |
Up to 24 hours after surgery |
|
Secondary |
Use of intravenous (IV) patient-controlled analgesia |
Data will be summarized using standard descriptive statistics by reporting mean (SD) or median (IQR) for continuous variables and frequency and percentages for categorical variables. Continuous variables will be compared between the two treatment arms using the two-sample t-test or the Wilcoxon rank sum test as appropriate. Categorical variables will be compared between the two treatment arms using the chi-square test or the Fisher's exact test. |
Up to 24 hours after surgery |
|
Secondary |
Use of intravenous rescue opioids |
Data will be summarized using standard descriptive statistics by reporting mean (SD) or median (IQR) for continuous variables and frequency and percentages for categorical variables. Continuous variables will be compared between the two treatment arms using the two-sample t-test or the Wilcoxon rank sum test as appropriate. Categorical variables will be compared between the two treatment arms using the chi-square test or the Fisher's exact test. |
Up to 24 hours after surgery |
|
Secondary |
Length of stay |
Data will be summarized using standard descriptive statistics by reporting mean (SD) or median (IQR) for continuous variables and frequency and percentages for categorical variables. Continuous variables will be compared between the two treatment arms using the two-sample t-test or the Wilcoxon rank sum test as appropriate. Categorical variables will be compared between the two treatment arms using the chi-square test or the Fisher's exact test. |
Up to 24 hours after surgery |
|
Secondary |
Additional fluid requirement after 24 hours of surgery |
Data will be summarized using standard descriptive statistics by reporting mean (SD) or median (IQR) for continuous variables and frequency and percentages for categorical variables. Continuous variables will be compared between the two treatment arms using the two-sample t-test or the Wilcoxon rank sum test as appropriate. Categorical variables will be compared between the two treatment arms using the chi-square test or the Fisher's exact test. |
Up to 24 hours after surgery |
|
Secondary |
Weight gain following surgery |
Data will be summarized using standard descriptive statistics by reporting mean (SD) or median (IQR) for continuous variables and frequency and percentages for categorical variables. Continuous variables will be compared between the two treatment arms using the two-sample t-test or the Wilcoxon rank sum test as appropriate. Categorical variables will be compared between the two treatment arms using the chi-square test or the Fisher's exact test. |
Up to 24 hours after surgery |
|
Secondary |
Cost of care |
Data will be summarized using standard descriptive statistics by reporting mean (SD) or median (IQR) for continuous variables and frequency and percentages for categorical variables. Continuous variables will be compared between the two treatment arms using the two-sample t-test or the Wilcoxon rank sum test as appropriate. Categorical variables will be compared between the two treatment arms using the chi-square test or the Fisher's exact test. |
Up to 24 hours after surgery |
|
Secondary |
Incidence of adverse events |
Incidence of adverse events related to spinal injection, systemic opioid effects and delayed recovery will be assessed. Data will be summarized using standard descriptive statistics by reporting mean (SD) or median (IQR) for continuous variables and frequency and percentages for categorical variables. Continuous variables will be compared between the two treatment arms using the two-sample t-test or the Wilcoxon rank sum test as appropriate. Categorical variables will be compared between the two treatment arms using the chi-square test or the Fisher's exact test. |
Up to 24 hours after surgery |
|
Secondary |
Operating room time |
Data will be summarized using standard descriptive statistics by reporting mean (SD) or median (IQR) for continuous variables and frequency and percentages for categorical variables. Continuous variables will be compared between the two treatment arms using the two-sample t-test or the Wilcoxon rank sum test as appropriate. Categorical variables will be compared between the two treatment arms using the chi-square test or the Fisher's exact test. |
Up to 24 hours after surgery |
|
Secondary |
Surgical time |
Data will be summarized using standard descriptive statistics by reporting mean (SD) or median (IQR) for continuous variables and frequency and percentages for categorical variables. Continuous variables will be compared between the two treatment arms using the two-sample t-test or the Wilcoxon rank sum test as appropriate. Categorical variables will be compared between the two treatment arms using the chi-square test or the Fisher's exact test. |
Up to 24 hours after surgery |
|
Secondary |
Total and pain management related standardized costs |
Data will be summarized using standard descriptive statistics by reporting mean (SD) or median (IQR) for continuous variables and frequency and percentages for categorical variables. Continuous variables will be compared between the two treatment arms using the two-sample t-test or the Wilcoxon rank sum test as appropriate. Categorical variables will be compared between the two treatment arms using the chi-square test or the Fisher's exact test. |
Up to 24 hours after surgery |
|