. Author manuscript; available in PMC: 2008 Dec 10.

Published in final edited form as: Early Interv Psychiatry. 2007 Aug 15;1(21):183–190. doi: 10.1111/j.1751-7893.2007.00022.x

TABLE 1.

Sample characteristics by chronology of depressive symptom onset

	Total AO-PSY Sample(n =62)	Depressive symptom onset				Comparison of three Chronological Groups
	Total AO-PSY Sample(n =62)	Sample with depressive symptoms(n =52)	Preprodrome(n =16)	During prodrome(n =20)	Post-transition(n =16)	Comparison of three Chronological Groups
Mean age in years (SD) of
Depressive symptom onset	not available	11.62 (3.68)	7.81 (2.64)	12.35 (3.03)	14.56 (1.75)	F =28.74, P <0.001
Prodrome onset	10.02	10.19 (3.30)	11.44 (2.56)	9.45 (3.90)	9.88 (2.94)	F =1.78, P =0.180
Transition to psychosis	12.89	12.90 (2.28)	13.00 (2.25)	14.15 (1.23)	11.25 (2.38)	F =9.69, P =0.0003
Duration of prodrome	2.88	2.71 (3.13)	1.56 (2.28)	4.70 (3.63)	1.38 (1.71)	F =8.48, P =0.0007
Positive symptom severity (SD)
At prodrome onset	12.23 (5.96)	12.67 (6.16)	14.94 (6.97)	10.40 (4.03)	13.25 (6.88)	F =2.67, P =0.079
At transition	22.19 (10.05)	21.90 (9.46)	20.56 (9.45)	25.40 (8.76)	18.88 (9.48)	F =2.48, P =0.094