Document Classification

Section Type: RESULTS

Text: Patients with vitamin B-12 deficiency at study end had a mean homocysteine level of 23. 7 micromol/l (95 % CI 18. 8 to 30. 0 micromol/l), compared with a mean homocysteine level of 18. 1 micromol/l (95 % CI 16. 7 to 19. 6 micromol/l ; P = 0. 003) for patients with a low vitamin B-12 concentration and 14. 9 micromol/l (95 % CI 14. 3 to 15. 5 micromol/l ; P < 0. 001 compared with vitamin B-12 deficiency ; P = 0. 005 compared with low vitamin B-12) for patients with a normal vitamin B-12 concentration (> 220 pmol/l).