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Table 2 Demographic characteristics of study populations

From: A simplified lung ultrasound for the diagnosis of interstitial lung disease in connective tissue disease: a meta-analysis

First author [Ref]

Numbers

Mean age (range) years ± standard deviation

Mean disease duration (months, years)

Spend time (min)

Number of LUS operator

Reproducibility between operator

Female

Male

Delle [32]

22

3

53 ± 10.5

–

–

2

Intra-class correlation = 0.681

Tardella [10]

30

4

57 ± 13

85.58 ± 84.37 months

23 ± 4.5

2

Kappa = 0.846–0.980

Barskova [24]

54

4

51 ± 14

–

< 10

2

Intra-observer variability 5.1%, inter-observer variability 7.4%

Mohammadi [33]

62

8

50.29 ± 9.7

88 ± 83.1 months

–

1

Kappa = 0.838

Moazedi-Fuerst [34]

54

10

59 ± 12

9.4 (2–21) years

–

2

Kappa = 0.92

Cogliati [7]

29

10

64.87

11.21 years

–

2

Kappa = 0.78

Moazedi-Fuerst [23]

38

7

54 (28–74)

8 (1–35) years

–

2

–

Vizioli [35]

–

–

65 ± 13

 

8 ± 1 (5–14)

 

–

Cakir [29]

46

2

50.8 ± 11.9

4.6 ± 3.8 years

–

2

Inter-observer reliability r = 0.96

Vasco [8]

13

0

63.62 (39–88)

–

–

2

Intra-rater reliability k = 1

Tardella [9]

34

6

56.4 ± 13.42

78 ± 81.52 months

8.7 ± 1.3

2

–

  1. LUS lung ultrasound