Spatial patterns of fetal loss and infant death in an arsenic-affected area in Bangladesh

Table 2 Significant spatial and spatiotemporal clusters of fetal loss and infant death in Matlab, Bangladesh, 1991-2000

Analysis type	Adjustment	Cluster	Time	Observed cases	Expected cases	Relative Risk	P value	Arsenic concentration
								Mean	Median	IQR
Spatial	Unadjusted	High	-	314	228.55	1.409	0.005	319	312	171-433
		Low	-	429	545.33	0.758	0.004	174	74	1-302
	Adjusted*	High	-	303	218.98	1.418	0.005	322	312	181-436
		Low	-	429	541.75	0.764	0.008	174	74	1-302
Spatiotemporal	Unadjusted	High	1992-1995	294	209.73	1.437	0.019	322	304	186-435
		Low	-	-	-	-	-	-	-	-
				-	-	-	-	-	-	-
	Adjusted*	High	-	-	-	-	-	-	-	-
		Low	-	-	-	-	-	-	-	-

IQR: Inter Quartile Range,
* Analysis was adjusted for age, parity, education and socioeconomic status
Note, Unadjusted analysis and adjustment for age, parity, education and socioeconomic status are presented separately. Arsenic concentration via tube-well water was compared between clusters by Analysis of variance (ANOVA). (See Figures 2 and 3 for cluster location).

ISSN: 1476-072X