Table 3.
Characteristics of cross-sectional studies (N = 6)
| Study | Publication type | Study design | Country | Region | City | Investigation period | No. COVID-19 cases (background population)* | Non-pharmaceutical interventions (country/region) | School closures (Yes/ No) | School closures (Date) |
|---|---|---|---|---|---|---|---|---|---|---|
| Torres 2020 [23] |
peer-review |
cross-sectional |
Chile |
NA |
Vitacura, Santiago |
3 Mar-6 Apr |
4471 [30] |
school closed; community under quarantine |
Yes |
13 Mar |
| Armann 2020 [24] |
pre-print |
cross-sectional |
Germany |
Saxony |
NA |
25 May-30 Jun |
227 [31] |
NA |
No |
13 Mar |
| Desmet 2020 [25] |
pre-print |
cross-sectional |
Belgium |
NA |
Brussels; Wallonia; Flanders |
2-12 Mar |
774 [32] |
NA |
No |
18 Mar |
| Fontanet 2020 [11] |
pre-print |
cross-sectional |
France |
NA |
Crépy-en-Valois |
30 Mar-4 Apr |
24055 [26] |
NA |
NA |
NA |
| Fontanet 2020 [12] |
pre-print |
cross-sectional |
France |
NA |
Crépy-en-Valois |
28-30 Apr |
2746 [26] |
NA |
NA |
NA |
| Stein-Zamir 2020 [22] | peer-review | cross-sectional | Israel | Judean Highlands | Jerusalem | 18 May-30 Jun | 8863 [22] | NA | No | NA |
*No. of COVID-19 cases for background population was not reported in original studies and was obtained from country’s official website.