. 2020 Sep 14;174(12):1159–1167. doi: 10.1001/jamapediatrics.2020.3009

Table 2. Prevalence at Birth of Microcephaly and Other Neurologic Outcomes Recorded Within First 90 Days of Life Among Infants With and Without a cCMV Diagnosis in a Cohort of Pregnancies Nested Within Pooled Medicaid Analytic eXtract (2000-2013) and MarketScan (2011-2015) Databases.

Outcome	Total, No.	No. (%)		Summary prevalence ratio (95% CI)^a
Outcome	Total, No.	cCMV diagnosis (n = 336)	No cCMV diagnosis (n = 2 338 244)	Summary prevalence ratio (95% CI)^a
Microcephaly	679	22 (6.5)	657 (0.03)	232 (154-350)
Neonatal seizures	5922	<11^b	NA	8 (4-17)
Hearing loss	4605	28 (8.3)	4577 (0.2)	46 (31-68)
Chorioretinitis or eye anomalies^c	1025	<11^b	NA	69 (37-128)

Abbreviations: cCMV, congenital cytomegalovirus; NA, not applicable.

^{^a}

Prevalence ratio of outcome among infants with a cCMV diagnosis divided by that in those without a cCMV diagnosis.

^{^b}

Cell contains fewer than 11 individuals. Therefore, to provide summary prevalence ratios while maintaining anonymity of participants, no additional frequency numbers are provided for this row.

^{^c}

Chorioretinitis and eye anomalies were combined owing to small case counts.