Table 3: Estimates of PQC of the population target size under study, on a regional basis, obtained on the basis of the 5 target domains with the NSUM approach and with the traditional CRO approach. Percentage (%) and absolute numbers (N) for the CRO approach.

PQC domains	%	IC (%)
NSUM Approach
Inadequate directions	6.82	6.33 - 7.31
Inadequate cooperation and courtesy of the personnel working in the Institute	2.44	2.15 - 2.74
Inadequate treatment received by Doctors of the Institute	2.34	2.06 - 2.63
Short waiting time for the medical consultation after scheduling an appointment	3.85	3.49 - 4.22
Inadequate general Service provided by this Institute	4.28	3.89 - 4.67
CRO Approach
Inadequate directions	2.67 (8)	0.84-4.49
Inadequate cooperation and courtesy of the personnel working in the Institute	0.33 (1)	0.00–0.99
Inadequate treatment received by doctors of the Institute	0.17 (1)	0.00-0.63
Short waiting time for the medical consultation after scheduling an appointment	36.00 (108)	30.57-41.43
Inadequate general Service provided by this Institute	0.67 (2)	0.00-1.59