Table 1.
Criteria for flagging primary brain malignancies and brain metastases using the base definition, more restrictive definition, and less restrictive definition.
Table 2.
Descriptive statistics for the “Early neuroimaging” and “No early neuroimaging” groups (matched).
Table 3.
Cancer diagnosis statistics (total, primary, and metastatic) for the “Early neuroimaging” and “No early neuroimaging” groups: base definition, more restrictive, and less restrictive.
Fig 1.
Histogram of individuals with cancer diagnoses from the imaged group and their matched controls by number of days from incident headache to cancer diagnosis.
Fig 2.
Kaplan-Meier survival curve for the early neuroimaging and non-early neuroimaging groups.
Survival is measured from the incident headache date, in years.