The geographic distribution of melanoma incidence in Massachusetts, adjusted for covariates

Table 3 Age-adjusted female invasive melanoma cancer statistics for the purely spatial analyses, Massachusetts, 1990–1999.

Highs	1	2	3	4	5
No Covariate adjustment
Obs¹	682	322	238	100	87
RR²	1.45	1.75	1.61	2.12	1.72
p-value	<0.0001	<0.0001	<0.0001	<0.0001	0.049
Percent Urban adjustment
Obs¹	671	315	358	93	*
RR²	1.42	1.44	1.52	2.19	*
p-value	<0.0001	<0.0001	<0.0001	<0.0001	*
SES adjustment
Obs¹	476	405	*	123	*
RR²	1.25	1.59	*	1.63	*
p-value	0.012	<0.0001	*	0.008	*
SES & Percent Urban adjustment
Obs¹	*	279	*	93	*
RR²	*	1.42	*	1.74	*
P-value	*	0.0004	*	0.015	*
Lows	A	B	C	D	E	F	G	H
No Covariates adjustment
Obs¹	127	64	275	115	57	139	*	*
RR²	0.50	0.41	0.66	0.56	0.48	0.62	*	*
p-value	<0.0001	<0.0001	<0.0001	<0.0001	0.0002	0.0002	*	*
Percent Urban adjustment
Obs¹	132	64	281	*	57	24	343	*
RR²	0.53	0.44	0.68	*	0.50	0.40	0.72	*
p-value	<0.0001	<0.0001	<0.0001	*	<0.0001	0.001	<0.0001	*
SES adjustment
Obs¹	*	*	281	*	77	330	*	29
RR²	*	*	0.71	*	0.59	0.75	*	0.47
p-value	*	*	<0.0001	*	0.006	0.0003	*	0.045
SES & Percent Urban adjustment
Obs¹	*	10	252	*	*	19	*	*
RR²	*	0.26	0.74	*	*	0.39	*	*
P-value	*	0.001	0.005	*	*	0.016	*	*

¹Obs = observed cases. ²RR = relative risk. *Cluster not significant for this analysis.

ISSN: 1476-072X