Digital Meditation for Postoperative Pain Control After Abdominal Surgery for Cancer

Adverse events (AEs) will be reported, and summarized using frequencies and percentages. An AE will be considered unexpected if the nature, severity, or frequency of the event is not consistent with the risk information previously described for the study intervention. Unexpected AEs will be summarized descriptively. The most common adverse events reported within the mindfulness literature anxiety, depression, and cognitive anomalies. The overall prevalence of meditation adverse events is 8%, which is similar to those reported for psychotherapy practice in general.

Feasibility for each arm is defined as completion of at least 50% of the program.The proportion completing at least 50% of the program will be compared to a null proportion of 20% completing at least 50% of the program using a one-sample Z-test.

Acceptability of intervention and mode of delivery will include quantitative and qualitative analyses. Quantitative analysis will include the Client Satisfaction Survey (CSQ-8). The CSQ-8 focuses on participant satisfaction with the intervention received, including:

• the overall quality
• perception of the program's ability to meet their needs
• amount of help received
• the extent to which this program helped them deal with recovery after surgery. The CSQ-8 has demonstrated good internal consistency, test-retest reliability, and sensitivity10.

Acceptability of intervention and mode of delivery will include quantitative and qualitative analyses. Quantitative analysis will include the System Usability Scale (SUS) administered to all participants at study completion of the study to all participants.

The SUS is a 10-item scale that examines the perceived usability of a technology and is commonly used in evaluating mobile apps. The SUS has demonstrated good reliability in other studies.