Table 6 Relationships between equol-producing status and demographic characteristics

Age^b

49.7 ± 9.7

48.9 ± 10.4

0.40 (0.07–2.04)

Number of births^b

1.9 ± 1.0

1.9 ± 1.1

0.94 (0.37–2.43)

Post-menopause (%)

38

36

1.61 (0.87–3.01)

Smoking habit (%)

 Non-smoker

91

82

–^c

 Current smoker

6

15

0.32 (0.15–0.63)*

 Ex-smoker

3

3

0.93 (0.30–2.70)

Log₁₀ urinary daidzein (μg/g-Cr)^b

3.2 ± 0.7

3.2 ± 0.7

0.75 (0.25–2.30)

Sampling sites (n)

 Hokkaido

30

70

–^c

 Miyagi

47

53

2.15 (1.17–4.02)*

 Kyoto

38

62

1.22 (0.67–2.23)

 Kochi

40

60

1.36 (0.74–2.50)

 Okinawa

40

60

1.28 (0.69–2.38)