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Table 1 Results of the quality evaluation for selected RCT studies

From: Statins as potential therapeutic drug for asthma?

Study

randomisation

double-blind

description dropouts

Jadad Scale

Menzieset al., [21]

1

2

1

4

Hothersallet al., [22]

1

2

1

4

Maneechotesuwan et al., [15]

1

2

1

4

Cowan et al., [25]

1

2

1

4

Braganza et al., [16]

2

2

1

5

  1. Jadad criteria allocate a point each for randomization, double-blind design, and description of dropouts. If randomization and double-blind concealment are assured, an additional 2 points are added. If randomization or double-blind concealment is not assured, a point is deducted for each. A trial with a score of 3 or more is regarded as high quality. Data from trials with scores of 3 or more were grouped and analysed separately from those scoring less than 3.