Schaufele8 | 181 | 4 months | Secondary | Adult | | | Yes | | |
MRC9 | 2545 | 13 years | Primary | Adult | | Yes | | Yes | |
Malik10 | 480 | 2 years | Secondary | Adult | Yes | | Yes | | |
Streif11 | 319 | 5 years | Secondary | Child | | | Yes | Yes | 1 |
Blann12 | 867 | 3 months | Secondary | Adult | | Yes | | Yes | |
Kulinna13 | 100 | 6 months | Secondary | Adult | | | Yes | | |
Morsdorf14 | 76 | 5 years | Primary and secondary | Adult | | Yes | | | 2 |
Sawicki15 | 179 | 6 months | Secondary | Adult | | | Yes | | 3 |
Poller16 | 285 | 3 months | Secondary | Adult | Yes | Yes | Yes | | 4, 5 |
Hsin17 | 53 | 3 months | Secondary | Adult | Yes | | | | |
Taylor18 | 241 | 12 months | Secondary | Adult | Yes | | | | |
SPIRIT Study19 | 1316 | 3 years | Secondary | Adult | Yes | | | | |
Palereti20 | 311 | 6 months | Secondary | Adult | Yes | | | | |
Pengo21 | 205 | 3 years | Secondary | Adult | Yes | Yes | | Yes | |
Koefoed22 | 100 | 3 months | Primary and secondary | Adult | | | | Yes | 6 |
Total | 7258 (483.9) | Range 3 months to 13 years | | | 7 | 5 | 6 | 5 | |