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Table 4 Odds ratios (ORs) and 95% confidence intervals (95% CIs) of glioma according to tertiles of DPI*

From: Dietary phytochemical index in relation to risk of glioma: a case-control study in Iranian adults

  Tertiles of DPI P trend*
T1 T2 T3
DPI scores ≤21 21 < to< 30 ≥30  
No. of participants n = 128 n = 128 n = 128  
Crude 1.00 0.93 (0.56–1.55) 0.60 (0.35–1.02) 0.06
Multivariable-adjusteda 1.00 0.77 (0.39–1.54) 0.43 (0.19–0.97) 0.04
  1. *Binary logistic regression was used to obtain OR and 95% CI. The overall trend of OR across increasing tertiles was examined by considering each category’s median score as a continuous variable
  2. a Adjusted for age, sex, and energy intake, physical activity, family history of cancer, family history of glioma, marital status, education, high-risk residential area, duration of cell phone use, supplement use, history of exposure to the radiographic X-ray, history of head trauma, history of allergy, history of hypertension, smoking status, exposure to chemicals, drug use, personal hair dye use, frequent fried food intake, frequent use of barbecue, canned foods and microwave, red and processed meat, fish, tea and coffee and, sugar-sweetened beverage, egg, total fat, dietary fiber, cholesterol, folate, selenium
  3. Hosmer-Lemeshow goodness-of-fit test: Chi-square = 11.06; degrees of freedom = 8; P = 0.20