Table 2.
Number and prevalence of babies with microcephaly by INTERGROWTH-21st standards, SIP, Uruguay
| Z- score |
Percentile |
||||||
|---|---|---|---|---|---|---|---|
| <2 sD | <3 sD | <3rd percentile | Mean | Median | Mean | Median | |
| N (%) | N (%) | N (%) | |||||
| Complete data on HC and gestational week (n=255 515) | 3428 (1.34) | 399 (0.16) | 3772 (1.48) | 0.82 | 0.84 | 69.9 | 80.0 |
| Implausible values removed* | 3370 (1.33) | 360 (0.14) | 3711 (1.46) | 0.77 | 0.84 | 69.7 | 80.0 |
| HC+0.5 cm* | 1737 (0.69) | 252 (0.10) | 2167 (0.85) | 1.06 | 1.09 | 76.0 | 86.2 |
| HC−0.5 cm* | 8166 (3.22) | 1056 (0.42) | 10 081 (3.98) | 0.24 | 0.24 | 56.2 | 59.4 |
| GA+4 days | 5718 (2.26) | 720 (0.28) | 7147 (2.82) | 0.48 | 0.48 | 62.2 | 68.6 |
*
Dataset limited to those with head circumference within 5 SD of the mean (n=253 452). GA, gestational age; HC, head circumference; SIP, perinatal computer system.