Randomization, allocation concealment, and blinding
BLIND
After baseline assessment, eligible participants were randomly assigned to the intervention group and the wait-list control group at a ratio of 1:1 by a computer-generated random allocation sequence, resulting in 46 participants in the two groups, respectively. The random allocation sequence was sealed in opaque, sequentially numbered envelopes by a research assistant. The registered nurse and intervention coordinator were not blind to the allocated treatment, but outcome assessors and analysts were blinded to group allocation to ensure allocation concealment.