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Table 1 Characteristics of included studies

From: Usefulness of speckle-tracking echocardiography for early detection in children with Duchenne muscular dystrophy: a meta-analysis and trial sequential analysis

First author Year Number of cases (DMD/control) Male (DMD/control, %) Age (year) Weight (DMD/control, kg) Height (DMD/control, cm) Heart rate (DMD/control, bpm) Country NOS score
DMD Control
Ryan 2013 63/61 100%/100% 5.6 ± 0.2 5.2 ± 0.2 19.7/21.0 106.7/111.4 100.8/87.7 USA 9
Spurney 2015 35/33 NR 13.0 ± 2.0 13.0 ± 3.0 NR NR 92.0/67.0 USA 8
Taqatqa 2016 19/16 100%/100% 11.0 ± 3.7 12.6 ± 3.1 38.0/54.4 136.0/164.0 98/69 USA 7
Cho 2018 13/26 NR 9.7 ± 2.2 9.7 ± 2.2 NR NR 91/80 Korea 7
Yu 2019 56/31 NR 8.8 ± 1.9 8.4 ± 1.8 27.9/28.9 128.6/132.1 NR China 8
Wang 2019 30/30 NR 7.8 ± 1.8 8.3 ± 1.7 27.7/28.1 122.6/126.6 89/91 China 6
Amedro 2019 36/72 100%/100% 11.0 ± 3.8 10.0 ± 3.5 36.8/37.9 134.9/143.7 96/75 Europe 9
Habib 2019 17/30 82%/83% 14.5 ± 3.7 22.3 ± 9.5 55.4/54.9 110.0/146.0 92/84 Egypt 6
  1. DMD Duchenne muscular dystrophy, NOS Newcastle–Ottawa Scale, NR No reported