Frequencies of indicators of hypotension and developmental delay (row per cents)
| BSID <70 | |||||||
|---|---|---|---|---|---|---|---|
| Exposures and BSID outcomes | Lowest ¼ile MAP* | Vasopressor† | Labile MAP‡ | MDI | PDI | N | |
| Lowest ¼ile MAP* | Yes | 45 | 42 | 30 | 34 | 206 | |
| No | 20 | 19 | 25 | 31 | 739 | ||
| Vasopressor† | Yes | 38 | 30 | 31 | 35 | 244 | |
| No | 16 | 22 | 25 | 31 | 701 | ||
| Labile MAP‡ | Yes | 39 | 32 | 28 | 30 | 225 | |
| No | 17 | 24 | 26 | 32 | 720 | ||
| BSID MDI <70 | Yes | 25 | 30 | 26 | 70 | 250 | |
| No | 21 | 24 | 23 | 20 | 695 | ||
| BSID PDI <70 | Yes | 24 | 28 | 22 | 58 | 300 | |
| No | 21 | 25 | 25 | 12 | 645 | ||
| Maximum number of infants | 206 | 244 | 225 | 250 | 300 | 945 | |
| Row % | 22 | 26 | 24 | 26 | 32 | ||
↵* Lowest ¼ile MAP: lowest mean arterial pressure recorded in the first 24 h, in the lowest quartile for gestational age.
↵† Vasopressor: treatment for hypotension in the first 24 h, using any vasopressor (dopamine, dobutamine, epinephrine).
↵‡ Labile MAP: labile blood pressure, defined as the upper quartile of the difference in the lowest and highest mean arterial pressure.
BSID, Bayley Scales of Infant Development; MDI, Mental Developmental Index; PDI, Psychomotor Developmental Index.