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Table 3 Odds ratios for cases versus controls by quartiles of total calories adjusted for age, gender, ethnicity, SES*, and supplement use; 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

Quartiles of Total Calories2 Combined Series I & II1 Series I (1991–1995) Series II (1996–2000)
  OR 95% CI3 p4 OR 95% CI3 p4 OR 95% CI3 p4
All case-control             
1st 1 -- --   1 -- --   1 -- --  
2nd 1.27 0.87 1.84 0.51 1.49 0.87 2.54 0.45 1.07 0.63 1.82 0.93
3rd 1.15 0.70 1.90   1.41 0.69 2.88   0.93 0.46 1.90  
4th 1.47 0.72 3.02   1.79 0.65 4.97   1.21 0.43 3.39  
Self-reported case-control             
1st 1 -- --   1 -- --   1 -- --  
2nd 1.22 0.79 1.87 0.74 1.62 0.84 3.11 0.53 0.98 0.55 1.76 0.83
3rd 1.11 0.62 1.99   1.59 0.66 3.83   0.82 0.37 1.80  
4th 1.30 0.56 2.99   1.79 0.51 6.23   1.03 0.32 3.26  
  1. *Categories for socio-economic status (SES) combine highest education attained and/or household income range. Case-control distributions (= N) for quartiles of nutrient consumption are provided in supplemental table 1 [see Additional file 1]. 1Also adjusted for study series.2Quartile cutpoints were calculated from series- and gender-specific nutrient intake distributions among controls. 3CI = Confidence interval. 4 p-value for chi-square test for trend.