Health problems can have an adverse impact on work productivity of patents and their caregivers. Patients and caregivers might have to stop working, reduce their routine work hours, miss work days, or may not be able to perform their work at their full capacity.
Work productivity loss has been considered as an important outcome for clinical trials to measure. However, the analysis of work productivity loss data often requires complicated statistical methods due to the nature of the data—namely, that the data usually contains a relatively high proportion of people who have zero losses and a high proportion of people who stop working, i.e., lose all work time.
Our two objectives were:
Objective one: Comparing statistical methods
We found there is a lack of consensus on how to measure, analyze, and present work productivity loss outcomes in recent clinical trials. We found that work productivity loss in recent clinical trials is often partially measured and commonly analyzed using assumptions that may not be met. Our study suggests that selecting an appropriate statistical method to analyze work productivity loss depends on the sample size and the data distribution of work productivity loss outcomes in each treatment arm of a clinical trial.
The diversity of measurement and analysis methods used in literature may make comparability challenging. There is a need for guidelines providing recommendations to standardize the methods used to measure, analyze, and report work productivity loss outcomes in each treatment arm of a clinical trial.
Objective two: Ways of communicating work productivity loss results to patients and caregivers
We found, in our interviews, that patients and caregivers want to be provided with:
From our survey, we found that:
Zhang, W., Sun, H. How to analyze work productivity loss due to health problems in randomized controlled trials? A simulation study. BMC Med Res Methodol 21, 130 (2021). https://doi.org/10.1186/s12874-021-01330-w (Objective 1)
Dr. Wei Zhang and Jacynthe L’Heureux presented preliminary findings in December 2021 in the Work in Progress Seminar Series held at the Centre for Health Evaluation and Outcome Sciences. (Objective 2)
We are also expecting to present at the upcoming 2022 BC Support Unit Conference: Putting Patients First, in March 2022. (Objective 2)