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Table 1 Distribution of vitamin supplement intake, age, gender, ethnicity, income, education, body mass index and tumor type for eligible participants for combined series I & II; San Francisco Bay Area Adult Glioma Study, 1991–2000

From: Inverse association of antioxidant and phytoestrogen nutrient intake with adult glioma in the San Francisco Bay Area: a case-control study

Description

 

Cases1

 

Controls (N = 846)

All (N = 802)

Self-reported (N = 497)

Proxy-reported (N = 305)

Vitamin Supplement intake (% YES)

62.6

52.4

***

50.2

***

56.0

*

General Demographics

       

   Age (median) ± SE2

55.1 ± 0.6

55.4 ± 0.6

ns

49.7 ± 0.7

***

64.7 ± 0.8

***

   Gender as % Male

54.5

57.1

ns

58.6

ns

54.8

ns

   Ethnicity as % White3

83.8

83.3

ns

83.9

ns

82.3

ns

Socio-economic Status Measures (%)

       

   Household Income4

       

<$29,999

25.0

24.3

ns

17.4

***

36.0

***

$30,000–$69,999

40.8

39.8

 

38.5

 

42.1

 

≥$70,000

34.1

35.9

 

44.1

 

21.9

 

   Highest Education

       

Less than high school

6.0

10.1

**

4.8

ns

18.7

***

High school, some college

48.5

48.9

 

47.5

 

51.2

 

College graduate and/or more

45.5

41.0

 

47.7

 

30.2

 

Socio-economic Status5

       

   <High School education or income <$29,999

27.3

27.7

ns

19.1

***

41.6

***

   ≥High School graduate or income $30,000–$69,999

53.2

50.4

 

52.7

 

46.6

 

   College graduate and income ≥ $70,000

19.5

22.0

 

28.2

 

11.8

 

Body Mass Index6 (median) ± SE2

25.7 ± 0.2

25.9 ± 0.2

ns

25.7 ± 0.2

ns

26.2 ± 0.3

ns

   Tumors Types (%)

       

Glioblastoma

 

59.2

 

47.7

 

78.0

 

Anaplastic Astrocytoma

 

11.2

 

10.7

 

12.1

 

Astrocytoma

 

5.4

 

7.2

 

2.3

 

Oligodendroglioma

 

11.1

 

16.5

 

2.3

 

Oligoastrocytoma

 

6.2

 

8.5

 

2.6

 

Ependymoma

 

1.0

 

1.4

 

0.3

 

Other

 

5.9

 

8.1

 

2.3

 
  1. 1 p-values for case-control comparisons (t-tests for continuous variables or chi-square tests for categorical variables): * p = 0.05, **p = 0.01, ***p = 0.001, or not significant (ns). 2 SE = standard error. 3 The category other than white includes African-Americans, Chinese, Japanese, other Asians, Filipinos, Mexicans, other Latinos, and others. 4 Percentages do not total 100% due to "Refuse to Answer" and "Don't Know". 5 Categories for Socio-economic Status combine highest education attained and/or household income range. 6 BMI calculated from reported height and weight at interview.