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Table 1 Descriptive Statistics for Women in the Comparison Group and Women with Breast Cancer at Baseline (Time 1) and After Completion of Chemotherapy (Time 2)

From: Tryptophan degradation in women with breast cancer: a pilot study

 

n

mean

median

std

stderr

95% LCL

95% UCL

Comparison Group (Benign Breast Biopsy)

Kynurenine (μmol/l)

24

1.98

1.92

0.43

0.09

1.79

2.16

Tryptophan (μmol/l)

24

52.89

51.90

10.44

2.13

48.48

57.30

Kyn/Trp ratio (μmol/l μmol)

24

3.81

3.81

0.88

0.18

3.44

4.18

Tyrosine (μmol/l)

24

81.70

76.63

26.20

5.35

70.64

92.77

Age (years)

24

49.96

48.50

10.98

2.24

45.32

54.60

Breast Cancer Group

Time 1 (Baseline - Prior to Induction of Chemotherapy)

Kynurenine (μmol/l)

33

2.27

2.05

1.13

0.20

1.87

2.67

Tryptophan (μmol/l)

33

48.86

47.62

10.68

1.86

45.08

52.65

Kyn/Trp ratio (μmol/l μmol)

33

4.62

4.10

1.88

0.33

3.95

5.28

Tyrosine (μmol/l)

32

85.43

81.49

19.12

3.38

78.53

92.32

Age (years)

33

47.76

50.00

7.58

1.32

45.07

50.45

Time 2 (After Completion of Chemotherapy)

Kynurenine (μmol/l)

30

2.00

1.97

0.66

0.12

1.75

2.24

Tryptophan (μmol/l)

30

48.14

49.82

10.81

1.97

44.11

52.18

Kyn/Trp ratio (μmol/l μmol)

30

4.23

3.99

1.36

0.25

3.72

4.74

Tyrosine (μmol/l)

30

86.44

83.99

20.76

3.79

78.69

94.19