TABLE 1. Microcephaly case counts by source of information and National Birth Defects Prevention Network (NBDPN) case definition — New York, 2013–2015.

Source of information	No. of suspected microcephaly cases	Confirmed* cases classified by NBDPN case definition
		Overall microcephaly†	Severe congenital microcephaly§
		No. (%)	No. (%)
Hospital request or SPARCS database	529	499 (100)	284 (100)
Hospital request	495	470 (94)	263 (93)
SPARCS database	472	454 (91)	256 (90)

Abbreviation: SPARCS = Statewide Planning and Research Cooperative System.

* Confirmed by retrospective chart review.

^† NBDPN case definition for overall microcephaly: all physician diagnoses of microcephaly, regardless of head circumference percentile.

^§ NBDPN case definition for severe congenital microcephaly: head circumference <3rd percentile for gestational age and sex.