Undiagnosed Diabetes in Breast, Colorectal, Lung, and Prostate Cancer: Incidence and Risk Factors

Table 1

Patient characteristics.

	Overall		Type of cancer
			Breast		Colorectal		Lung		Prostate
	𝑁	% (SD)	𝑛	% (SD)	𝑛	% (SD)	𝑛	% (SD)	𝑛	% (SD)
	154,692	100	36,212	23.4	33,005	21.3	35,761	23.1	49,714	32.1
Age at diagnosis (years)
67–70	23,498	15.2	5,437	15.0	3,661	11.1	5,339	14.9	9,061	18.2
71–75	44,578	28.8	9,936	27.4	7,503	22.7	10,631	29.7	16,508	33.2
76–80	41,887	27.1	9,630	26.6	8,545	25.9	10,090	28.2	13,622	27.4
>80	44,729	28.9	11,209	30.1	13,296	40.3	9,701	27.1	10,523	21.2
Mean and (SD) age	76.3	(6.7)	76.6	(6.5)	78.1	(6.8)	76.0	(6.0)	75.1	(7.0)
Gender
Male	83,272	53.8	NI	NI	14,739	44.7	18,819	52.6	49,714	100
Female	71,420	46.2	36,212	100	18,266	55.3	16,942	47.4	NA	NA
Race/ethnicity
White	131,000	84.7	31,923	88.2	28,162	85.3	30,824	86.2	40,091	80.6
Black	11,227	7.3	2,048	5.7	2,158	6.5	2,609	7.3	4,412	8.9
Hispanic	5,374	3.5	1,066	2.9	1,182	3.6	987	2.8	2,139	4.3
Other	7,091	4.6	1,175	3.2	1,503	4.6	1,341	3.8	3,072	6.2
Year of diagnosis
1999	21,578	14.0	5,300	14.6	4,542	13.8	4,527	12.7	7,209	14.5
2000	44,195	28.6	10,283	28.4	9,701	29.4	10,421	29.1	13,790	27.7
2001	44,927	29.0	10,517	29.0	9,486	28.7	10,613	29.7	14,311	28.8
2002	43,992	28.4	10,112	27.9	9,276	28.1	10,200	28.5	14,404	29.0
Stage at diagnosis
In situ	8,456	8.1	5,697	15.7	2,759	8.4	NI	NI	NI	NI
I	34,001	32.4	16,493	45.6	8,635	26.2	8,873	24.8	NA	NA
II	21,374	20.4	10,565	29.2	9,575	29.0	1,234	3.5	NA	NA
III	20,737	19.8	1,852	5.1	7,195	21.8	11,690	32.7	NA	NA
IV	20,410	19.4	1,605	4.4	4,841	14.7	13,964	39.1	NA	NA
Localized	47,244	95.0	NA	NA	NA	NA	NA	NA	47,244	95.0
Distant	2,470	5.0	NA	NA	NA	NA	NA	NA	2,470	5.0
Percent in census tract with some college*
<25%	53,892	34.8	11,975	33.1	12,016	36.4	12,690	35.5	17,211	34.6
≥25%	100,781	65.2	24,233	66.9	20,984	63.6	23,067	64.5	32,497	65.4
Percent in census tract living in poverty
<5%	48,053	31.1	11,773	32.5	9,935	30.1	9,928	27.8	16,417	33.0
5–7%	21,425	13.9	5,366	14.8	4,580	13.9	4,739	13.3	6,740	13.6
8–12%	34,511	22.3	8,226	22.7	7,538	22.8	8,049	22.5	10,698	21.5
>12%	48,929	31.6	10,428	28.8	10,511	31.9	12,689	35.5	15,301	30.8
Missing	1,774	1.2	419	1.2	441	1.3	356	1.0	558	1.1
Type of geographic area
Large metropolitan	86,555	56.0	20,678	57.1	18,383	55.7	19,759	55.3	27,735	55.8
Metropolitan	42,693	27.6	10,139	28.0	9,077	27.5	9,686	27.1	13,791	27.7
Urban	9,799	6.3	2,206	6.1	2,084	6.3	2,444	6.8	3,065	6.2
Less urban/rural	15,645	10.1	3,189	8.8	3,461	10.5	3,872	10.8	5,123	10.3

SD: standard deviation; NI: not included in the study; NA: not applicable; *19 patients had a missing value.