Table 1.

Demographic characteristics of cases and healthy controls.

Characteristics		Cases (n=306)	Controls (n=1162)	P value
Female, n (%)		284 (92.81)	955 (82.18)	<.001
Age (years)
	At the time of study	49.0	33.0	<.001
	At the time of diagnosis	44.0	N/Aa	N/A
Caucasian, n (%)		266 (86.93)	944 (81.23)	.02
Weight (kg), median		76.0	72.6	.01
Body mass index, median		28.5	25.8	<.001
First-degree relatives, n (total=average #/participant)		1596 (5.2)	4484 (3.8)	N/A
Siblings, n		560	1417	N/A
Children, n		519	874	N/A

^aN/A: not applicable.