Table 2.
Episode frequency and duration and associated hospitalization during the first two years of life
| Gestational age, wk | Infants, n | Infants with at least one EOC, n | Rate of at least one episode per thousand children | EOCa, n | Mean episode duration, d (SD) | Episode consisting of ED visit and hospitalization and lasting >1 db, n (%) | Episode with any hospitalization, n (%) |
|---|---|---|---|---|---|---|---|
| 32–33 |
1,649 |
406 |
246.2 |
523 |
4.4 (5.5) |
37 (14.2) |
101 (19.3) |
| 34–36 |
7,969 |
1,622 |
203.5 |
2,003 |
3.9 (5.0) |
72 (7.8) |
254 (12.7) |
| 37 |
7,855 |
1,400 |
178.2 |
1,681 |
3.4 (4.6) |
44 (6.4) |
151 (9.0) |
| 38–40 |
86,708 |
13,701 |
158.0 |
16,172 |
3.3 (4.7) |
396 (6.3) |
1,288 (8.0) |
| ≥41 |
19,083 |
2,839 |
148.8 |
3,369 |
3.2 (4.7) |
70 (5.6) |
242 (7.2) |
| Total | 123,264 | 19,968 | 162.0 | 23,748 | 3.2 (4.7) | 619 (6.6) | 2,036 (8.6) |
ED = emergency department. EOC = Episode of Care.
aAcross episodes during the first two years of life, there were a total of 35,703 outpatient visits for a rate of 289 per 1000 children, a total of 1909 emergency department visits for a rate of 15 per 1000 children and 2169 hospitalizations for a rate of 17.5 per 1000 children.
bDenominator is among episodes >1 day for each gestational age cohort.