Table 2 Summary of grouped statements by domain

From: A Delphi study to build consensus on the definition and use of big data in obesity research

Statement domains

Number of statements in each domain

Proportion of statements where consensus was achieved (n)

Round 1

Round 2

Round 3

Round 1

Round 2

Round 3

Definition of Big Data

14

15

15

64.3% (9)

80.0% (12)

100.0% (15)

Data Acquisition

13a

16

16

38.5% (5)

68.8% (11)

81.3% (13)

Ethics

13

15

15

61.5% (8)

80.0% (12)

93.3% (14)

Data Governanceb

5a

5

5

80.0% (4)

100.0% (5)

100.0% (5)

Training and Infrastructureb

11

12

12

63.6% (7)

75.0% (9)

75.0% (9)

Reporting and Transparencyb

9

11

11

77.8% (7)

90.9% (10)

90.9% (10)

Quality and Inferenceb

11

11

11

81.8% (9)

90.9% (10)

100.0% (11)

Totals

76

85

85

64.5% (49)

81.2% (69)

90.6% (77)

  1. Note: Consensus was achieved when 70% of participants strongly agreed/agreed or strongly disagreed/disagreed with a statement
  2. aStatements in this round of this domain include responses where ‘don’t know’ exceeded 30% of total responses
  3. bStability of consensus (<10% variation) was achieved between Round 2 and Round 3
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