Data:

file is 
"C:\Docu~1\Melanie Wall\Desktop\pubh7435\genetictestingrawdata.csv";

variable:
names are
C1	C2	C3	C4	C5	C6	C7	C8	C9	C10	C11	C12	C13	C14	C15	C16	C17	C18	C19	C20	
age	race marital educlevl insured;

usevariables are
c1-c6;

missing are .;

analysis: type = efa 1 3;