Design | Period 1 0–3 months | Period 2 3–6 months | Period 3 6–9 months | Period 4 9–12 months |
---|---|---|---|---|
Sequence ABBA (n = 10) | A = UC | B = MSMP | B = MSMP | A = UC |
Sequence BAAB (n = 10) | B = MSMP | A = UC | A = UC | B = MSMP |
Sequence AABB (n = 10) | A = UC | A = UC | B = MSMP | B = MSMP |
Sequence BBAA (n = 10) | B = MSMP | B = MSMP | A = UC | A = UC |