TABLE 4.

Calling dispositions and response rate during different data collection phases of the World Mental Health Qatar survey.

Disposition	Pilot	Wave 1	Wave 2	Total
Completed a	447	1551	3197	5195
Not completed	3703	12,499	37,603	53,805
Eligible b	910	3685	12,627	17,222
Ineligible c	1884	6201	18,274	26,359
Unknown eligibility d	909	2613	6702	10,224
Raw response rate RR1, e (%)	19.7	19.8	14.2	15.9
Adjusted response rate or RR2, f (%)	25.7	24.1	16.9	19.2

Note: Response rates (RR1 and RR2) were calculated using standardized coding and interpretation procedures for different dialing outcomes, as set by AAPOR (2023).

^a People who reached the last question in the survey, namely the demographics section, near the end of the interview (after answering most health‐related questions).

^b Eligible phone numbers included Arab residents who refused to participate in the study and those who agreed to an appointment but did not fulfill the appointment upon follow‐up. People who completed part of the interview were also included in this category.

^c Ineligible cases primarily consisted of non‐Arab individuals, Arabs who could not speak Arabic, and those under 18 years old.

^d Phone numbers dialed with no answer, a hang‐up, or a refusal before interviewers could determine the eligibility of the case.

^e Ratio of the number of completed interviews to the total sample size after excluding ineligibles.

^f Ratio of the number of completed interviews to the total sample size after accounting for unknown eligibility.