Table 2 Qualitative findings (Newcastle-Ottawa Quality Assessment Scale)
Selection | Comparability | Exposure | Total score | |||||||
|---|---|---|---|---|---|---|---|---|---|---|
Author (Journal) | Is the case definition adequate? | Representativeness of the cases | Selection of controls | Definition of controls | Comparability of cases and controls (age) | Ascertainment of exposure | Same method of ascertainment of cases and controls | Non-response rate | ||
1 | Grifoni et al. [7] (Circulation) | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 8 |
2 | Yalamanchili et al. [8] (Am J Cardiol) | 1 | 1 | 1 | 1 | 0 | 1 | 1 | 1 | 7 |
3 | Kucher et al. [9] (Arch Intern Med) | 0 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 7 |
4 | Sukhija et al. [10] (Am J Cardiol) | 0 | 1 | 1 | 1 | 0 | 1 | 1 | 1 | 6 |
5 | Grifoni et al. [11] (Arch Intern Med) | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 8 |
6 | Pieralli et al. [12] (Am J Cardiol) | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 8 |
7 | Jimenez et al. [13] (Arch Bronchoneumol) | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 8 |
8 | Logeart et al. [14] (Intensive Care Med) | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 8 |
9 | Palmieri et al. [15] (Intern Emerg Med) | 1 | 1 | 1 | 1 | 0 | 1 | 1 | 1 | 7 |
10 | Gallotta et al. [16] (Int J Cardio) | 1 | 1 | 1 | 1 | 0 | 1 | 1 | 1 | 7 |
11 | Stein et al. [17] (Am J Cardio) | 0 | 1 | 1 | 1 | 0 | 1 | 1 | 1 | 6 |
12 | Jimenez et al. [18] (Thorax) | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 8 |