Calculation of sample weights

	Sample in NFHS-2 urban Delhi	Proportion of NFHS-2 urban Delhi	Sample selected for follow-up survey	Proportion of sample selected for follow-up survey	Sample found in follow-up survey	Response rate	Probability of selection from sample	Joint probability (with response rate)	Weight (1/JP)	Normalized weight (Wt1 × n/N)
Categories of sample	N	P1	n1	P2	n2	R	P3	JP	Wt1	Wt
Normal	1117	0·613736	217	0·364706	113	0·520737	0·194270	0·101164	9·884956	1·830346
Overweight	500	0·274725	227	0·381513	124	0·546256	0·454000	0·248000	4·032258	0·746632
Obese	203	0·111538	151	0·253782	100	0·662252	0·743842	0·492611	2·030000	0·375885
Total	1820	1·00	595	1·00	337	–	–	–	–	–