Table 5 Comparison of the quality of study reporting using the RECORD extension to the STROBE statement checklist.

From: Using routinely collected primary care records to identify and investigate severe asthma: a scoping review

   

Gayle

Price 2015

Turner

Walsh

Yang

Nissen

Bloom

Price 2016

Hull

Larsson

Moth

Shields

Title and abstract

Introduction

1

(a) Study design

 

X

X

X

 

X

X

X

 

X

X

X

  

(b) Abstract

X

X

X

X

X

 

X

X

X

X

X

X

  

R 1.1 Type of data & database names

X

X

X

X

X

X

X

X

X

X

X

X

  

R 1.2 Geographic region & timeframe

X

X

 

X

X

X

X

X

X

X

 

X

  

R 1.3 Database linkage

1

1

1

1

 

X

X

 

X

X

X

X

Background/rational

2

 

X

X

X

X

X

X

X

X

X

X

X

X

Objectives

3

 

X

X

X

X

X

X

 

X

X

X

X

X

Methods

Study design

4

 

X

X

X

X

X

X

X

X

 

X

X

X

Setting

5

 

X

X

X

X

X

X

X

X

X

X

X

X

Participants

6

(a) Participants

X

X

X

X

X

X

X

X

X

X

X

X

  

(b) Matched studies

3

3

3

3

3

3

3

3

3

3

3

3

  

R 6.1 Study population selection

S

X

X

 

X

X

X

X

X

X

X

X

  

R 6.2 Validation of codes/algorithms

X

    

X

X

  

X

X

 
  

R 6.3 Data linkage process flow diagram

1

1

1

1

        

Variables

7

 

X

X

X

 

X

X

X

X

X

X

X

X

  

R 7.1 Complete code/algorithm list

S

 

S

 

S

S

X

  

X

X

 

Data sources/measurement

8

 

X

X

X

X

X

X

X

X

X

X

X

X

Bias

9

           

X

 

Study size

10

 

X

X

X

 

X

X

X

X

X

X

X

X

Quantitative variables

11

 

X

X

X

 

X

X

X

X

X

X

X

X

Statistical methods

12

(a) Methods

X

X

X

X

X

X

X

X

X

X

X

X

  

(b) Subgroups/interactions

X

X

X

X

X

X

X

X

X

X

X

X

  

(c) Missing data

X

 

X

   

X

7

    
  

(d) Loss to follow-up or matching

X

2

2

  

X

      
  

(e) Sensitivity analyses

X

    

X

X

  

X

  
  

R 12.1 Access to database population

X

X

X

X

X

X

X

X

 

X

X

X

  

R 12.2 Data cleaning methods

        

X

   
  

R 12.3 Data linkage level, methods and quality evaluation

1

1

1

1

    

X

   

Results

Participants

13

(a) Numbers

S

X

X

 

X

X

X

X

X

X

X

 
  

(b) Non-participation

S

X

X

 

X

X

X

X

 

X

X

 
  

(c) Flow diagram

S

X

X

  

X

X

X

 

X

  
  

R 13.1 Study population selection

X

X

X

  

X

X

  

X

  

Descriptive data

14

(a) Characteristics

X

X

X

 

X

X

X

X

X

X

X

X

  

(b) Missing data

  

X

   

X

6

X

  

X

  

(c) Follow-up (average or total)

 

2

2

  

X

X

2

    

Outcome data

15

 

X

X

X

X

X

X

X

X

X

X

X

X

Main results

16

(a) Unadjusted & adjusted

X

X

X

X

X

X

 

X

 

X

X

X

  

(b) Category boundaries

4

X

X

4

X

X

 

X

X

4

X

X

  

(c) Relative risk to absolute risk

5

  

5

 

X

X

    

X

Other analyses

17

Subgroups, interactions or sensitivity

X

X

X

X

X

X

X

X

X

X

X

X

Discussion

Key results

18

 

X

X

X

X

X

X

X

X

X

X

X

X

Limitations

19

Study limitations

X

X

X

X

X

X

X

X

X

X

X

X

  

R 19.1 Data limitations

X

X

X

 

X

X

X

X

X

X

X

X

Interpretation

Interpretation

20

 

X

X

X

X

X

X

X

X

X

X

X

X

Generalisability

Generalisability

21

 

X

X

X

X

 

X

X

X

X

X

X

X

Other information

Funding

22

 

X

X

X

X

X

X

 

X

X

X

X

X

  

R 22.1 Study protocol, raw data or programming code

X

 

X

 

X

X

X

 

X

   

Reporting summary

Study reporting

 

Checklist points covered

34

31

35

21

30

40

37

31

29

35

33

31

  

Valid points available

41

41

41

41

46

46

46

43

46

45

46

46

  

Proportion of valid points (%)

82.9

75.6

85.4

51.2

65.2

87.0

80.4

72.1

63.0

77.8

71.7

67.4

  1. R—RECORD criteria; S—information available from supplementary materials of article; 1—Not applicable: no data linkage conducted; 2—Not applicable: inclusion criteria specified complete data for follow-up period available, therefore no loss to follow-up for final cohort; 3—Not applicable: study did not involve matching; 4—Not applicable: no categories in output data; 5—Not applicable: no risk analysis included; 6—Not applicable: inclusion criteria specified complete baseline and outcome data.
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