Table 3.
Birth Characteristics | e-ROP cohort infants | p value* | |||
---|---|---|---|---|---|
Total (n=1257) |
without AEs (n=1196) |
with AEs (n=61) |
|||
GA mean weeks (SD) [range] | 27.0 (2.2) [22.7–35.1] | 27.0 (2.2) [22.7–35.1] | 26.4 (1.8) [23.7–32.1] | 0.03 | |
22 −25 weeks n (%) | 436 (35) | 404 (34) | 32 (52) | 0.02 | |
26 or 27 weeks n (%) | 420 (33) | 406 (34) | 14 (23) | ||
28 or 29 weeks n (%) | 265 (21) | 253 (21) | 12 (20) | ||
≥ 30 weeks n (%) | 136 (11) | 133 (11) | 3 (5) | ||
BW mean grams, (SD) [range] | 864 (212) [330–1250] | 866 (214) [330–1250] | 824 (183) [476–1180] | 0.13 | |
<500 grams | n (%) | 34 (3) | 32 (3) | 2 (3) | 0.18 |
500–749 grams | n (%) | 386 (31) | 367 (31) | 19 (31) | |
750–999 grams | n (%) | 444 (35) | 416 (35) | 28 (46) | |
1000–1250 grams | n (%) | 393 (31) | 381 (32) | 12 (20) | |
Male Gender n % | 638 (51) | 601 (50) | 37 (61) | 0.11 | |
Inborn at e-ROP center n (%) | 792 (63) | 752 (63) | 40 (66) | 0.67 | |
Race/Ethnicity | 0.42 | ||||
Non-Hispanic white | 621 (49) | 588 (49) | 33 (54) | ||
Non-Hispanic black | 366 (29) | 346 (29) | 20 (33) | ||
Hispanic | 122 (10) | 119 (10) | 3 (5) | ||
Other/Unknown | 148 (12) | 143 (12) | 5 (8) |
p value for difference between infants with and without AEs using two-sample t-test for mean and Chi-squared test for proportional difference.
Abbreviations: GA, gestational age; BW, birth weight