Table 2.

Mean zinc concentration in serum (μmol/l)^‡§

(Mean values and standard deviations)

	PSAC∥		NPNLW¶
	Mean‡‡	sd	Mean‡‡	sd
National	10·25	2·34	10·04	1·72
Rural	10·04	1·75	10·06**	1·76
Urban	11·02***†††	3·68	10·05*	1·55
Slum	9·89	1·60	9·67	1·67

PSAC, pre-school-age children; NPNLW, non-pregnant non-lactating women; CRP, C-reactive protein; AGP, α-1-acid glycoprotein.

Mean value was significantly different from that for slum: *P = 0·017, ** P = 0·012, *** P < 0·001.

^†††Mean value was significantly different from that for rural (P < 0·001).

^‡Adjusted for elevated CRP (>10 mg/l) or elevated AGP (>1 g/l) by mathematical correction^(11,12).

^§Estimates weighted to represent at the population level.

^∥Age 6–59 months.

^¶Age 15–49 years.

^‡‡One-way ANOVA.