Table 1 Characteristics of moderate (Group A) and very or extremely (Group B) preterm infants.
Group A (n = 40) | Group B (n = 40) | |
Sex | ||
male | 19 | 18 |
female | 21 | 22 |
PMA at birth, median in days (IQR) | 250 (241-254) | 189 (178-202) |
PMA at recording, median in days (IQR) | 253 (246-258) | 252 (245-256) |
ROP at the time of testing | 0 | 8 |
Stage 1, zone II | 6 | |
Stage 2, zone II | 1 | |
Stage 3, zone II | 1 | |
ROP treatment at the time of testing | 0a | 0 |
