Table 1.

Index event characteristics, rates of PTSD, and MDD positive screens and diagnoses, and details of diagnostic onset

		Percentage	Frequency	Total N
Index event characteristics
Index event	COVID related	24	25	103
	COVID unrelated	76	78	103
	Pre‐pandemic a	63	65	103
	Post‐pandemic	37	38	103
	Occupational	52	54	103
	Personal	48	49	103
Rates of positive screens and diagnoses b
PTSD	PCL‐5 Positive screen	38	39	103
	SCID Diagnosed	44	45	56
MDD	PHQ‐9 Positive screen	55	57	103
	SCID Diagnosed	39	40	56
Co‐morbid PTSD MDD	PCL‐5 or PHQ‐Positive Screen	54	60	103
	SCID Diagnosed	29	30	103
Index event characteristics in SCID diagnosed PTSD
Index event	COVID related	27	12	45
	COVID unrelated	73	33	45
	Pre‐pandemic	60	27	45
	Post‐pandemic	40	18	45
	Occupational	56	25	45
	Personal	44	20	45
Onset of symptoms in individuals meeting diagnostic criteria for PTSD or MDD
SCID PTSD onset	Pre‐pandemic	47	21	45
	Post‐pandemic	53	24	45
Index event pre‐pandemic: Onset	Pre‐pandemic	85	23	27
	Post‐pandemic	15	4	27
SCID MDD onset	Pre‐pandemic	15	6	40
	Post‐pandemic	85	34	40

PCL‐5 = PTSD Checklist for DSM‐5, PHQ‐9 = Patient Health Questionnaire, SCID = Structured Clinical Interview for DSM‐5.

^a Pre‐pandemic was considered to be any date prior to the WHO declaration in March 2020

^b Diagnostic interview administered to N = 59 above cut off on either screening measure N = 3 participants with a positive screen were uncontactable for assessment.