Table 1 Study period with randomisation steps
Centres | Historical control-periods | Periods of core-study | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|
(4 × 6 months) | Jan-Jun | Jul-Dec | Jan-Jun | Jul-Dec | Jan-Jun | Jul-Dec | ||||
Jan-2013 - Dec 2014 | 2015 | 2015 | 2016 | 2016 | 2017 | 2017 | ||||
A – D | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 1 | 1 | 1 |
E – I | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 1 | 1 |
J – N | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 1 |
O – R | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 |