Table 1.

Cohort Selection

		Patients	PCL Pairs
Overall Cohort
A	How many patients had any diagnosis of PTSD between 10/1/99 and 9/30/19?	2,098,389	N/A
B	How many of (A) had at least 1 PCL Score?	852,438	N/A
C	How many of (B) had at least 1 additional PCL score within 30 to 365 days of the first?	353,847	6,158,258
D	How many of (C) do not include overlapping PCL pairs within the same patient?	353,847	480,372
E	How many of (D) had at least one concurrent drug trial lasting at least 28 days?	192,006	223,048
F	How many of (E) met the criteria to be considered a case* or control**?	168,941	192,912
Sensitivity Analysis Cohorts
G	How many of (F) did not coincide with any instance of EBT?	69,453	75,266
H	How many of (F) had a baseline PCL score of 38 or higher and a PTSD diagnosis within 30 days of baseline?	119,372	134,289
I	How many of (H) did not coincide with any instance of EBT?	44,400	47,778

PTSD=Posttraumatic Stress Disorder, PCL=PTSD Checklist, EBT=Evidence-Based Treatment for PTSD

^*Case: PCL improvement of 15 points or more

^**Control: PCL improvement of 7 points or less or PCL worsening