From: A randomized controlled trial of vitamin E and selenium on rate of decline in lung function
Placebo | Vitamin E | Selenium | Selenium + vitamin E | |
---|---|---|---|---|
Selenium/matching placebo | % adherent (range) † | |||
Year 1 (n = 2,920) | 92 (87–92) | 89 (84–90) | 91 (85–91) | 87 (82–88) |
Year 2 (n = 2,920) | 90 (84–91) | 87 (81–87) | 89 (83–90) | 87 (81–88) |
Year 3 (n = 2,910) | 90 (83–91) | 87 (81–88) | 89 (82–89) | 87 (80–88) |
Year 4 (n = 2,887) | 85 (78–87) | 84 (76–85) | 86 (77–87) | 87 (77–88) |
Year 5 (n = 2,216) | 84 (76–85) | 80 (73–82) | 82 (75–84) | 83 (73–85) |
Year 6 (n = 901) | 82 (72–85) | 79 (68–82) | 82 (74–84) | 86 (75–87) |
Vitamin E/matching placebo | % adherent (range) † | |||
Year 1 (n = 2,920) | 92 (87–92) | 89 (84–90) | 90 (86–91) | 87 (82–88) |
Year 2 (n = 2,920) | 90 (85–91) | 88 (81–88) | 88 (82–89) | 87 (80–88) |
Year 3 (n = 2,910) | 88 (82–89) | 87 (81–88) | 86 (79–87) | 86 (78–87) |
Year 4 (n = 2,887) | 84 (76–85) | 81 (74–83) | 84 (76–86) | 84 (75–86) |
Year 5 (n = 2,216) | 81 (74–83) | 79 (71–81) | 81 (74–83) | 79 (69–81) |
Year 6 (n = 901) | 81 (69–83) | 76 (66–79) | 78 (70–81) | 80 (69–82) |