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Table 3 How many patient participant countries are included in core outcome set (COS) development by COS development stage

From: Survey indicated that core outcome set development is increasingly including patients, being conducted internationally and using Delphi surveys

Stage of COS development (n)

1 country

n (%)

2 countries

n (%)

3 countries

n (%)

4 countries

n (%)

5 + countries

n (%)

Published (36)

21 (58)

5 (14)

1 (3)

1 (3)

8 (22)

Completed (36)

13 (36)

6 (17)

5 (14)

3 (8)

9 (25)

Ongoing (63)

36 (57)

10 (16)

2 (3)

2 (3)

13 (21)

Total (135)

70 (52)

21 (16)

8 (6)

6 (4)

30 (22)