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Table 3 Characteristics of the cluster randomised crossover trials

From: The quality of reporting in cluster randomised crossover trials: proposal for reporting items and an assessment of reporting quality

Disease or domain under study n (%)
(N = 83)
Infection control 19 (23%)
Cardiovascular disease 10 (12%)
Health services delivery 9 (11%)
Infectious disease 8 (10%)
General and public health 5 (6%)
Medical training 5 (6%)
Communication of health information 4 (5%)
Pregnancy, childbirth, and early childhood 3 (4%)
Mental health and behavioural conditions 3 (4%)
Respiratory disease 3 (4%)
Blood sample contamination 3 (4%)
Cognition 3 (4%)
Central nervous system and musculoskeletal disease 2 (2%)
Oral health 2 (2%)
Nutritional and metabolic disorders 1 (1%)
Urogenital disease 1 (1%)
Digestive disorders 1 (1%)
Pain management 1 (1%)
Type of intervention
Intervention targeting the individual 42 (51%)
Intervention targeting health care provider 21 (25%)
Quality improvement intervention 14 (17%)
Intervention resulting in change to the participant environment 6 (7%)
Number of interventions
2 74 (89%)
3 8 (10%)
4 1 (1%)
Number of clusters - Median [IQR];
Range
8 [321];
2 – 268
Unclear 4 (5%)
Number of periodsa
2 53 (70%)
3 8 (11%)
4+ 15 (18%)
Unclear 7 (8%)
Cluster-period size - Median [IQR];
Range
27 [14–77];
2 – 1319
Unclear 17 (20%)
  1. aPercentages of non-missing data presented