Table 3.

Comparison of performance of C values derived applying different strategies

Estimation method	Correlation of e and ê*(eligible groups)	Correlation of e and ê (ineligible groups)	MSE	PMAB	NMAB	Slope (SE)**
All reference groups (national) C= 239	0.60	Not applicable	216780	2.34	0.48	0.63 (0.10)
All reference groups (average of province estimates) C= 248	0.60	Not applicable	225674	2.20	0.47	0.60 (0.09)
Eligible groups via regression method C= 380	0.97	0.06	25422	1.28	0.54	0.79 (0.06)
Eligible groups via ratio method C= 308	0.95	0.63	13884	1.22	0.78	0.91 (0.06)

^*The correlation between real (e) and estimated size (ê) of reference groups is the same as correlation between prevalence of reference groups in the community with average people known by respondents in each

^**slope of regression through origin line of predicted versus real sizes