Skin prick testing for the different groups shown
| POLD-reversible | POLD-fixed | pPRISm | pDysanapsis | Preterm controls | Term | |
| Negative skin prick test (n) | 12 | 7 | 24 | 7 | 76 | 63 |
| Positive skin prick test (n) | 6 | 2 | 6 | 3 | 23 | 8 |
| Per cent with positive skin prick test | 33%* | 22% | 20% | 30% | 23% | 11% |
| Total | 18 | 9 | 30 | 10 | 99 | 71 |
*Significant versus Tc (single symbol denotes significance level <0.05).
pDysanapsis, dysanapsis of prematurity; POLD, prematurity-associated obstructive lung disease; pPRISm, prematurity-associated PRISm.