From: Smoking status in relation to serum folate and dietary vitamin intake
 |  | Smokers % (n) | Ex/Non smokers % (n) | P-value |
---|---|---|---|---|
Gender | Male | 48.2 (109) | 51.8 (117) | <0.001 1 |
 | Female | 13.3 (37) | 86.7 (241) |  |
Age in years | 18 – 39 | 39.7 (48) | 60.3 (73) | <0.001 |
 | 40 – 59 | 30.6 (81) | 69.4 (184) |  |
 | 60 – 80 | 13.6 (16) | 86.4 (102) |  |
Fasting in days per year 3 | 0 | 32.2 (47) | 19.7 (70) | <0.001 |
 | 1 – 100 | 58.2 (85) | 48.3 (172) |  |
 | 101 – 180 | 8.3 (12) | 32.0 (114) |  |
 |  | Mean ± SD (n) | Mean ± SD (n) |  |
Body Mass Index 2 |  | 29.6 ± 0.4 (144) | 30.2 ± 0.3 (354) | 0.286 |
Energy intake in kcal 2 |  | 2121 ± 57 (142) | 2075 ± 35 (353) | 0.507 |
Physical Activity Level 2 |  | 2.40 ± 0.06 (144) | 2.34 ± 0.04 (354) | 0.399 |