Table 2 Possible presentation of baseline characteristics in two-period two-intervention cluster randomised crossover trial
Characteristic | Intervention sequence AB | Intervention sequence BA | ||
|---|---|---|---|---|
Period 1–Intervention A Group 1 | Period 2–Intervention B Group 2 | Period 1–Intervention B Group 3 | Period 2–Intervention A Group 4 | |
Time-invariant characteristics | ||||
Time-invariant cluster characteristic | Such as proportion of each ward type: Cardiac: 25% Intensive Care: 40% Neurology: 35% | Such as proportion of each ward type: Cardiac: 25% Intensive Care: 40% Neurology: 35% | Such as proportion of each ward type: Cardiac: 35% Intensive Care: 45% Neurology: 20% | Such as proportion of each ward type: Cardiac: 35% Intensive Care: 45% Neurology: 20% |
Time-invariant participant characteristic (cohort design only) | Such as patient sex: 59% male | Such as patient sex: 59% male | Such as patient sex: 48% male | Such as patient sex: 48% male |
Time-varying characteristics | ||||
Time-varying cluster characteristic | Nurse-to-patient ratio over 24 h, Median (IQR): 2.1 (2.0 – 2.2) | Nurse-to-patient ratio over 24 h, Median (IQR): 2.0 (1.9 – 2.1) | Nurse-to-patient ratio over 24 h, Median (IQR): 2.3 (2.1 – 2.4) | Nurse-to-patient ratio over 24 h, Median (IQR): 2.2 (2.1 – 2.4) |
Time-varying participant characteristic (cohort and repeated cross-sectional design) | Such as patient weight (kg), Mean (SD): 83.4 (14.2) | Such as patient weight (kg), Mean (SD): 78.9 (15.6) | Such as patient weight (kg), Mean (SD): 81.2 (13.2) | Such as patient weight (kg), Mean (SD): 80.4 (11.2) |