Table 1 Characteristics of participants.

From: A cross-sectional study of inflammatory markers as determinants of circulating kynurenines in the Lung Cancer Cohort Consortium

n

5364

n (US)

2400

n (nordic)

835

n (Asia)

1775

n (Australia)

354

Age, yearsa

62 (47, 75)

Male (%)

2456 (45.8)

BMI, kg/m2a

24.7 (19.3, 33.4)

Never smokers, n (%)a

1327 (24.7)

Former smokers, n (%)a

1518 (28.3)

Current smokers, n (%)a

2519 (47.0)

KTR, nmol/µmol

22.6 (16.4, 34.5)

Neopterin, nmol/L

11.0 (5.14, 23.6)

CRP, mg/L

1.77 (0.24, 13.2)

Tryptophan, µmol/L

66.5 (46.2, 90.7)

Kynurenine, µmol/L

1.51 (1.05, 2.22)

KA, nmol/L

43.9 (22.0, 91.2)

AA, nmol/L

13.9 (7.99, 29.1)

HK, nmol/L

36.6 (20.3, 70.6)

XA, nmol/L

12.4 (4.6, 29.1)

HAA, nmol/L

32.6 (16.1, 59.5)

QA, nmol/L

353 (208, 685)

Creatinine, µmol/L

74.5 (52, 105)

Cotinine, nmol/L

14.4 (1, 1870)

Riboflavin, nmol/L

19.2 (5.85, 89.6)

PLP, nmol/L

37.1 (13.8, 196)

  1. Values are median (95% CI) or n (%). AA: anthranilic acid; BMI: body mass index; CRP: C-reactive protein; HAA: 3-hydroxyanthranilic acid; HK: 3-hydroxykynurenine; KA: kynurenic acid; KTR: kynurenine/tryptophan; PLP: pyridoxal 5′-phosphate; QA: quinolinic acid; XA: xanthurenic acid.
  2. aAge, BMI and self-reported smoking status at date of blood draw.
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