Table 2 Descriptive and diagnostic characteristics of administrative data algorithms

95 % CI

95 % CI

Restrictive

Lix 2006 [28]

1 hospitalization OR 2 physician visits OR 1 physician visit and 2 Rx ICD-9-CM diagnostic codes in 5 years

5

0.43

0.39–0.47

0.91

0.90–0.92

4.63

0.35

0.61

0.83

Lix 2006 [28]

1 hospitalization OR 2 physician visits ICD–9–CM diagnostic codes in 5 years

5

0.33

0.29–0.37

0.94

0.93–0.95

5.47

0.38

0.65

0.85

Lix 2006 [28]

2 physician visits ICD–9–CM diagnostic codes in 5 years

5

0.32

0.28–0.35

0.94

0.94–0.95

5.54

0.64

0.84

Self-report

Rahman 2008 [29]

2 physician visits in 2 years OR 1 hospitalization ICD-9-CM diagnostic code

2^b

0.29

0.89

2.64

0.23

0.47

0.73

ACR criteria

Rahman 2008 [29]

2 physician visits in 2 years OR 1 hospitalization ICD-9-CM diagnostic code

2^b

0.31

0.89

2.82

0.24

0.48

0.74

Less restrictive

Medical Record Review

Fowles 1995 [23]

1 physician visit ICD-9-CM diagnostic code

1

0.32

0.26–0.40

0.95

0.94–0.96

6.40

0.42

0.68

0.86

Kadhim–Saleh 2013^a [24]

1 ICD-9-CM diagnostic code OR problems list in EMR

unspecified

0.45

0.35–0.55

1 (0.97^δ)

0.97–1.00

15.00

0.63

0.83

0.94

Coleman 2015^a [27]

1 ICD-9-CM diagnostic code OR problems list in EMR

unspecified

0.63

0.57–0.68

0.94

0.88–0.97

10.50

0.54

0.78

0.91

Williamson 2014^a [26]

1 ICD-9-CM diagnostic code OR problems list in EMR

unspecified

0.78

0.75–0.81

0.95

0.94–0.96

15.25

0.63

0.84

0.94

Self-report

Lix 2006 [28]

1 physician visit ICD-9-CM diagnostic code in 5 years

5

0.50

0.46–0.54

0.89

0.88–0.90

4.42

0.34

0.60

0.82

ACR criteria

Rahman 2008 [29]

1 physician visit or 1 hospitalization ICD-9-CM diagnostic code

2^b

0.61

0.70

2.03

0.18

0.40

0.67

Harrold 2000 [25]

1 inpatient or outpatient ICD-9-CM diagnostic code

3

0.83

0.78–0.87

0.60

0.55–0.66

2.10

0.19

0.41

0.67

Rahman 2008 [29]

1 physician visit or 1 hospitalization ICD-9-CM diagnostic code

2^b

0.58

0.66

1.71

0.16

0.36

0.63