Table 1.

Number of participants, mean ages (with standard deviation in parentheses) and sex ratios for each stress group across both imaging and cognitive datasets. Sex ratio is female to male.

	Brain imaging			Cognitive Data
	N	Age	Sex	N	Age	Sex
Group 1 (Low Childhood & Low Adulthood stress)	4963	55.16 (7.16)	1.07	4461	55.16 (7.29)	1.04
Group 2 (Low Childhood & High Adulthood stress)	165	53.54 (7.30)	3.85	127	52.92 (7.44)	3.88
Group 3 (High Childhood & Low Adulthood stress)	151	54.07 (7.93)	1.7	133	53.37 (7.71)	1.89
Group 4 (High Childhood & High Adulthood stress)	202	52.66 (7.24)	5.5	176	52.91 (7.58)	5.77