Table 3.

Delphi specific survey issues

Duration of rounds
Round duration	n (%)
Time for each round	<2 weeks	2–4 weeks	>4 weeks	Not reported/not clear/n/a
Round 1	1 (3)	23 (70)	9 (27)	45
Round 2	1 (3)	25 (78)	6 (19)	46
Round 3	0	16 (80)	4 (20)	58

Scoring systems and feedback approaches	n (%)
Scoring system (round 1)
1–9/1–10*	52 (70)†
0–4/1−4/1–5	12 (16)
9/10/12 most important outcomes	4 (5)
Yes/no/don’t know or agree/disagree/unsure	7 (9)
Not reported	2
Unclear	1
Source of stakeholder feedback round 2
All stakeholder groups combined	10‡ (21)
Stakeholder groups reported separately	21 (44)
Own stakeholder group only	10§ (21)
Stakeholder groups reported separately and all stakeholder groups combined	5 (10)
SWAT¶ – different groups saw different feedback	1 (4)
N/a patients only took part in one round	13
Not reported	13
Unclear	4
Feedback type reported**
Graphical feedback††	17 (40)
Numerical frequencies	24 (56)
Summary statistics††	15 (35)‡‡
Dispersion/distribution of scores	28 (65)
Anonymised comments from prior round	2 (5)
N/a patients only voted in one round	13
Not reported	22

*Only two studies used 1–10.

†Children in one of these studies used 1–3 scale, and caregivers in another study scored differently to patients in one of these studies – patients used score cards.

‡Including one study that also provided the patient group scores and one study in which participants could request feedback by stakeholder group.

§Including one study which also provided combined scores for all.

¶Study Within a Trial.

**Studies could report more than one type of feedback.

††Excludes anywhere it was unclear whether the feedback type was reported.

‡‡10 studies reported only summary statistics.