Table 1

Considerations for a future definitive trial

ObjectivesCriteria for success
To evaluate the feasibility of procedures for a cluster randomised controlled trial in the public physiotherapy sector in Thailand (ie, randomisation, recruitment, data collection, adherence, trial management and follow-up).Feasible to conduct a phase III trial
  • No major obstruction issue and/or serious adverse event (assessed by trial monitoring).

  • Feasible for the type of study (randomised design) (assessed by trial monitoring).

  • Feasible for procedures of data collection, trial management and follow-up (assessed by trial monitoring).

  • At least three participants a month per hospital.

To explore the acceptability of the ABPI among Thai physiotherapists and patients with acute non-specific neck pain.
  • The ABPI can be acceptable to Thai physiotherapists and patients with acute non-specific neck pain (explored by qualitative study).

  • Acceptable rate ≥60% of participants in each group.

To estimate sample size in order to conduct an adequately powered definitive trial.
  • All parameters can be provided to calculate sample size for an adequately powered definitive trial.

  • ABPI, active behavioural physiotherapy intervention.