Table 1 Basic characteristics of 622 men according to quartiled Spm + Spd concentrationsa
Basic characteristics of study cohortb | Quartile of Spd + Spm concentration (range)b | P for effectc | |||
|---|---|---|---|---|---|
Q1 (≤0.082) (n = 155) | Q2 (≤0.102) (n = 156) | Q3 (≤0.121) (n = 156) | Q4 (>0.121) (n = 155) | ||
Age (years) | 49.5 ± 6.6 | 50.0 ± 6.3 | 51.7 ± 6.0 | 51.3 ± 6.1 | 0.004 |
Body mass index (kg/m2) | 23.0 ± 2.4 | 23.3 ± 2.6 | 23.5 ± 2.6 | 23.7 ± 2.6 | 0.119 |
Fasting plasma glucose (mmol/l) | 5.62 ± 1.13 | 5.54 ± 0.75 | 5.93 ± 1.21 | 5.97 ± 1.67 | 0.003 |
Fasting plasma insulin (μU/ml) | 5.35 ± 2.86 | 5.89 ± 6.15 | 6.06 ± 3.28 | 6.45 ± 5.99 | 0.240 |
HOMA–IRd | 1.34 ± 0.74 | 1.45 ± 1.36 | 1.62 ± 0.99 | 1.69 ± 1.58 | 0.042 |
Fructosamine (μmol/l) | 251 ± 34 | 255 ± 26 | 257 ± 38 | 260 ± 47 | 0.145 |
Polyamine-to-hemoglobin ratio (μmol/g) | |||||
Spd + Spm | 0.060 ± 0.023 | 0.092 ± 0.005 | 0.110 ± 0.006 | 0.158 ± 0.093 | <0.001 |
Spm | 0.034 ± 0.022 | 0.042 ± 0.018 | 0.053 ± 0.019 | 0.078 ± 0.060 | <0.001 |
Smoking status (% of subjects) | |||||
Never | 35.5 | 35.9 | 35.9 | 32.3 | 0.882 |
Past | 19.4 | 21.8 | 24.4 | 25.2 | |
Current | 45.2 | 42.3 | 39.7 | 42.6 | |
Drinking status (% of subjects) | |||||
None | 27.1 | 27.6 | 29.5 | 34.2 | 0.094 |
Light | 20.6 | 27.6 | 23.1 | 21.3 | |
Moderate | 20.6 | 26.9 | 16.7 | 19.4 | |
Heavy | 31.6 | 17.9 | 30.8 | 25.2 | |
Leisure-time physical activity (% of subjects) | |||||
Not very active | 79.2 | 76.5 | 76.8 | 78.6 | 0.575 |
Somewhat active | 13.0 | 12.4 | 16.8 | 15.6 | |
Regularly active | 7.8 | 11.1 | 6.5 | 5.8 | |
Present history of chronic disease (% of subjects)e | |||||
Yes | 14.8 | 16.0 | 21.2 | 18.1 | 0.481 |