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Table 5 Odds ratio (OR) estimates and confidence intervals (CIs) for high blood pressure (yes = 301/no = 712) in relation to alcohol intake (g/day change) in the food requency uestionnaire (FFQ). Estimates are compared for the test, the retest, the test-retest mean, and calibrated mean intake, n = 1013

From: Test-retest reproducibility of a food frequency questionnaire (FFQ) and estimated effects on disease risk in the Norwegian Women and Cancer Study (NOWAC)

  Test (FFQ1) Retest (FFQ2) Mean (FFQ1 and FFQ2) Calibrated mean
Alcohol intake (g/day) OR 95% CI OR 95% CI OR 95% CI OR 95% CI
1 0.94 (0.90, 0.98) 0.93 (0.89, 0.97) 0.92 (0.88, 0.97) 0.91 (0.85, 0.97)
10 0.53 (0.33, 0.84) 0.49 (0.32, 0.75) 0.45 (0.28, 0.74) 0.38 (0.21, 0.67)