Selected demographic and follow-up data on infants presenting with an ALTE
| Characteristic | Cohort (n=485) | Missing data | Cardiac testing at time of ALTE (n=219) | No testing at time of ALTE (n=266) | p Value |
|---|---|---|---|---|---|
| Boys, n (%) | 240 (50) | 0 (0) | 109 (50) | 131 (49) | 0.90 |
| Age in months, mean (SD) | 1.9 (±2) | 2 (0) | 2.1 (±2.4) | 1.8 (±2) | 0.15 |
| Premature (<37 weeks), n (%) | 104 (22) | 0 (0) | 40 (18) | 70 (26) | 0.04 |
| History of prior ALTE, n (%) | 131 (27) | 16 (3) | 70 (27) | 61 (29) | 0.59 |
| Use of rescue breaths, n (%) | 43 (9) | 28 (6) | 20 (10) | 23 (9) | 0.89 |
| Family history of sudden death, SIDS, or cardiac disease, n (%) | 12 (5) | 230 (47) | 9 (8) | 3 (2) | 0.04 |
| Clinical cardiac indication, n (%) | 29 (6) | 0 (0) | 20 (4) | 19 (7) | 0.50 |
| Follow-up years, mean (SD) | 7.7 (±1) | 0 (9) |
ALTE, apparent life-threatening event; SIDS, sudden infant death syndrome.