Table 3. Keywords used to highlight relevant information in the clinical documents identified from the ICD-9 search.

DSD Keywords
46 XX	CAH
46 XY	congenital adrenal hyperplasia
46-XX	gonad
46-XY	hypospad
XO	labia
XX	mosaic
XY	penile
ambig	penis
chordee	phall
karyotyp	prader
penoscrotal	urogenital sinus
perineal	viriliz
severe hypospad
undescended

Keywords and phrases in the left column were used in conjunction with the ICD-9 code (752.61) for hypospadias; whereas those in both columns were used in conjunction with the balance (ie, non-hypospadias) of ICD-9 codes listed in Table 2. Note that because of the searching process, a keyword search for a term such as “gonad” would also identify terms such as “gonads”, “gonadic”, and “gonadal”.