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Table 1 Sensitivity, precision and number needed to read (NNR) of the 15 search queries in OvidSP EMBASE with the highest sensitivity (see the complete list in Additional file 1)

From: Search strategies to identify reports on “off-label” drug use in EMBASE

Queries

Number of relevant records retrieved

Number of records retrieved

Sensitivity/full set (%)

Sensitivity/EMBASE set (%)

Precision (%)

NNR

off label*.af.

3150

3577

77.5

81.9

88.1

1.1

(off adj2 label*).mp.

3131

3589

77.0

81.4

87.2

1.1

(off adj1 label*).mp.

3130

3567

77.0

81.4

87.7

1.1

off label*.mp.

3128

3555

76.9

81.3

88.0

1.1

off label.af.

3119

3542

76.7

81.1

88.1

1.1

(off adj1 label).mp.

3119

3544

76.7

81.1

88.0

1.1

(off adj2 label).mp.

3119

3547

76.7

81.1

87.9

1.1

off label.mp.

3117

3540

76.6

81.0

88.1

1.1

"off label*".ab,ti.

2306

2696

56.7

60.0

85.5

1.2

off label.ab,ti.

2293

2679

56.4

59.6

85.6

1.2

"off label*".ab.

1882

2224

46.3

48.9

84.6

1.2

off label.ab.

1870

2208

46.0

48.6

84.7

1.2

(drug adj2 label adj2 us*).af.

1587

1719

39.0

41.3

92.3

1.1

(drug adj1 label adj1 us*).af.

1581

1710

38.9

41.1

92.5

1.1

"off label drug us*".af.

1580

1677

38.8

41.1

94.2

1.1

  1. ADJn is a positional operator to retrieve records that contain the terms (in any order) within a specified number (n) of words of each other. The adj1 operator finds two terms next to each other in any order. The adj2 operator finds terms in any order and with one word (or none) between them.