Table 1. Characteristics of Sampled Patients With Bronchiolitis Not Receiving Any Supplemental Oxygen or Nasal Cannula Flow.
| Variable | Patient observations, No. (%)a |
|---|---|
| Patient demographics | |
| Age | |
| 8 wk-5 mo | 1742 (48) |
| 6-11 mo | 1001 (28) |
| 12-17 mo | 560 (16) |
| 18-23 mo | 309 (9) |
| Gestational age | |
| Preterm (28 0/7 to 33 6/7 wk documented in the chart) | 361 (10) |
| Not pretermb | 3251 (90) |
| Sex | |
| Male | 2125 (59) |
| Female | 1485 (41) |
| Not specified | 2 (<1) |
| Racec | |
| White | 2034 (56) |
| Black or African American | 553 (15) |
| Specified as “other” | 500 (14) |
| Specified as “unknown” | 279 (8) |
| Asian | 144 (4) |
| More than 1 race | 56 (2) |
| Native Hawaiian or Pacific Islander | 30 (1) |
| American Indian or Alaska Native | 16 (<1) |
| Ethnicityc | |
| Not Hispanic or Latino | 2454 (68) |
| Hispanic or Latino | 766 (21) |
| Unknown | 259 (7) |
| Other | 133 (4) |
| Illness characteristics at time of observation | |
| Time since weaning from supplemental oxygen or flow, h | |
| Never received | 1190 (33) |
| <1 | 80 (2) |
| 1-<2 | 148 (4) |
| 2-<4 | 244 (7) |
| 4-<6 | 234 (6) |
| 6-<12 | 505 (14) |
| 12-<24 | 687 (19) |
| ≥24 | 499 (14) |
| Unknown | 25 (<1) |
| Prior intensive care unit stay during present hospitalization | 884 (24) |
| Apnea or cyanosisd | 235 (7) |
| Comorbid condition associated with neurologic impairmente | 93 (3) |
| Enteral feeding tube (nasogastric or gastrostomy) | 305 (8) |
| Hospital typef | |
| Freestanding children’s hospital (n = 33) | 2667 (74) |
| Children's hospital within hospital (n = 14) | 591 (16) |
| Community hospital (n = 9) | 354 (10) |
| Time of day observation performed | |
| Day (10 am to 5 pm) | 2073 (57) |
| Night (11 pm to 7 am) | 1539 (43) |
For some variables, the sum of percentages does not equal 100% because of rounding.
Not preterm included the following: documented gestational age 34 0/7 weeks and above, absence of gestational age but documented as full term, or absence of gestational age but not labeled in chart as preterm or premature.
Patient family-reported race and ethnicity were abstracted from charts in categories defined by the Standards for the Classification of Federal Data on Race and Ethnicity, in compliance with National Institutes of Health inclusion reporting policies.
Includes documentation of apnea or cyanosis occurring at home or in the hospital during the present illness.
Static encephalopathy, cerebral palsy, hydrocephalus, spina bifida, epilepsy/seizure disorder, or hypotonia.
Median (interquartile range) number of observations was 70 (61-95) for freestanding children’s hospitals, 38 (24-62) for children’s hospitals within a hospital, and 35 (29-57) for community hospitals.