Table 2 Summary of queries
From: REDCapDM: An R package with a set of data management tools for a REDCap project
Variables | Description | Event | Query | Total |
|---|---|---|---|---|
copd | Chronic obstructive pulmonary disease | Baseline visit | The value should not be missing | 6 |
age | Age | Baseline visit | The value should not be missing | 5 |