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Table 3 The 24 items that were proposed by the individual experts during the meeting

From: Capturing phenotypic heterogeneity in MPS I: results of an international consensus procedure

Items

Number of experts who proposed each item#

1. Global developmental delay/cognitive decline

18

2. Age at onset of symptoms <1.5 yr

13

3. Joint stiffness/arthropathy/contractures

11

4. Kyphosis/spinal involvement

11

5. Dysostosis multiplex

10

6. Cardiac involvement: valvular disease + cardiomyopathy

10

7. Large head/frontal bossing

8

8. Hydrocephalus

7

9. Age at diagnosis <1.5 yr

7

10. Coarse facial features

6

11. Growth retardation

4

12. Hepatosplenomegaly

4

13. Corneal clouding

4

14. Pulmonary function

4

15. Obstructive sleep apnea syndrome

3

16. Hearing problems

3

17. Cervical cord compression

2

18. Carpal tunnel syndrome

2

19. Abdominal hernia

1

20. Hip dysplasia

1

21. Recurrent otitis media

1

22. Macroglossia

1

23. Early surgical intervention

1

24. Affected sibling

1

  1. # Certain items were individually mentioned by the experts but were used as a single item in the sum score (for example, developmental delay and cognitive decline were counted together); such items explain why the number of experts proposing a certain item occasionally exceeds the total number of experts