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Table 3 Logistic regression

From: Serum concentrations of kynurenines in adult patients with attention-deficit hyperactivity disorder (ADHD): a case–control study

  Adjusted for sex Adjusted for sex and tryptophan
B p value Odds ratio (95 % confidence interval) B p value Odds ratio (95 % confidence interval)
Tryptophan −0.50 0.002** 0.61 (0.45–0.83)    
Kynurenine −0.23 0.14 0.80 (0.59–1.08) −0.04 0.80 0.96 (0.69–1.34)
Kyn/Trp-ratio (KTR) 0.12 0.45 1.12 (0.83–1.51) −0.11 0.53 0.90 (0.64–1.25)
3-hydroxykynurenine (HK) −0.01 0.70 0.94 (0.70–1.27) 0.01 0.94 1.01 (0.74–1.38)
Kynurenic acid (KA) −0.32 0.04* 0.73 (0.53–0.99) −0.21 0.21 0.81 (0.59–1.12) 
Xanthurenic acid (XA) −0.43 0.006** 0.65 (0.48–0.89) −0.30 0.07 0.74 (0.54–1.03)
Anthranilic acid (AA) −0.01 0.97 0.99 (0.74–1.34) 0.04 0.79 1.04 (0.77–1.42)
3-hydroxyanthranilic acid (HAA) −0.47 0.003** 0.63 (0.46–0.85) −0.38 0.02* 0.69 (0.50–0.94)
Quinolinic acid (QA) −0.02 0.90 0.98 (0.73–1.32) 0.04 0.82 1.04 (0.76–1.41)
Riboflavin (vitamin B2) −0.39 0.01* 0.68 (0.50–0.92) −0.34 0.03* 0.71 (0.52–0.97)
Total vitamin B6 −0.17 0.26 0.84 (0.62–1.14) −0.09 0.55 0.91 (0.67–1.24)
Cotinine 1.97 <0.001*** 7.17 (4.37–12.58) 1.94 <0.001*** 6.96 (4.22–12.25)
  1. Odds ratio of ADHD per tertile of variable. Cotinine is divided into three categories corresponding to the serum level in non-smokers, smokers and heavy smokers. All participants included: N = 264. Significance <0.001: ‘***’, <0.01: ‘**’, <0.05: ‘*’