Characteristics of the external Delphi panel
| Characteristics | Total | Round1/Round2 | Health professionals in perinatal period | Health professionals involved in follow-up | Parents and preterm adults | Other |
| n=64 | n=60/60 | n=19 | n=19* | n=16* | n=*8* the star is misplaced | |
| Country | ||||||
| Austria | 1 | 1/1 | X | |||
| Belgium | 7 | 7/7 | X | X | X | |
| Canada | 2 | 2/2 | X | |||
| Czech Republic | 1 | 1/1 | X | |||
| Denmark | 1 | 1/1 | X | |||
| Estonia | 5 | 5/4 | X | X | ||
| Finland | 2 | 2/2 | X | X | ||
| France | 7 | 7/6 | X | X | X | X |
| Germany | 5 | 5/3 | X | X | ||
| Ireland | 1 | 1/1 | X | |||
| Italy | 5 | 5/5 | X | X | X | X |
| The Netherlands | 4 | 4/4 | X | X | X | |
| Norway | 4 | 2/3 | X | X | ||
| Portugal | 3 | 4/4 | X | X | X | |
| Spain | 3 | 3/3 | X | |||
| Sweden | 7 | 5/7 | X | X | X | X |
| UK | 6 | 4/6 | X | X | X | |
| Discipline/Background* | ||||||
| Obstetrician | 4 | 4/4 | X | |||
| Neonatologist | 17 | 14/17 | X | |||
| Nurse in neonatology | 1 | 1/1 | X | |||
| Paediatrician | 7 | 6/7 | X | |||
| Paediatrician subspecialist† | 5 | 5/4 | X | |||
| Psychologist | 7 | 7/7 | X | |||
| Physiotherapist | 1 | 1/1 | X | |||
| Parent/Parent representative | 11 | 11/10 | X | |||
| Adult born preterm | 5 | 5/4 | X | |||
| Policy maker | 4 | 4/3 | X | |||
| Epidemiologist | 3 | 3/3 | X | |||
| Sociologist | 2 | 1/2 | X |
*Three members were classified in two categories (parent/sociologist, parent/psychologist, sociologist/policy maker).
†Neurologist (n=2), endocrinologist (n=2), ophthalmologist (n=1).