Travel, Timing Windows, and Participant Burden

Why visit count alone is not enough when deciding whether a study is a practical fit.

Last updated: February 27, 2026

Burden usually comes from combinations

  • Travel distance plus frequent visits
  • Short visits plus rigid timing windows
  • Remote tasks plus high diary compliance demands
  • Overnight stays plus work or family obligations

Practical rule

Translate protocol demands into calendar reality. If the logistics are difficult before enrollment, they are unlikely to become easier once screening, reminders, and follow-up expectations begin.