Fig. 1

Description of study methodology, divided by interview round. CD cognitive debriefing, CE concept elicitation, SCD sickle cell disease, SCPD-C sickle cell pain diary-caregiver report, SCPD-CN sickle cell pain diary-caregiver report for non-school age children, SCPD-CS sickle cell pain diary-caregiver report for school age children