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. 2020 Jul 29;17(15):5487. doi: 10.3390/ijerph17155487

Table 3.

Summary of the quality assessment of primary studies included in the systematic reviews.

Attribute Defined Population N (%) Outcome N (%) Data Collection Time N (%) Study Setting N (%)
Yes 73 (100%) 73 (100%) 4 (5.5%) 50 (68.4%)
No - - 34 (46.6%) 15 (20.5%)
Unclear - - 35 (47.9%) 8 (9.6%)