Table 5. Methodological stratification of neonatal mortality outcomes for preterm babies (<34 and 34–36 wk), stratified by weight for gestational age (appropriate [AGA]≥10%, or small [SGA]<10%), using term and appropriate for gestational age as the reference group.

Gestational Age Estimation Method	OR	95% CI
Ultrasound a
Appropriate for gestational age
≥37 wk	Ref	—
34–36 wk	8.0	1.3–47.5
<34 wk	140.1	45.9–427.5
Small for gestational age
≥37 wk	3.5	1.6–7.7
34–36 wk	24.6	5.1–117.8
<34 wk	78.5	11.8–520.9
Neonatal assessment b
Appropriate for gestational age
≥37 wk	Ref	—
34–36 wk	1.4	0.2–7.5
<34 wk	34.5	9.9–119.4
Small for gestational age
≥37 wk	1.1	0.4–2.9
34–36 wk	18.0	6.3–51.4
<34 wk (Uganda only)	22.3	0.8–566.9

^aMwanza and Korogwe, Tanzania.

^bUganda and Kenya.