Table 4 Effects of the combined nicotinamide riboside and nicotinamide riboside + resveratrol groups, compared to placebo, in participants with peripheral artery disease

From: Nicotinamide riboside for peripheral artery disease: the NICE randomized clinical trial

 

NR alone and NR + resveratrol groups combined

Placebo

Comparison of change between the combined NR groups and placebo

 

Baseline, mean (standard deviation)

Follow-up, mean (standard deviation)

Within group change, LSMeans (standard error)

Baseline, mean (SD)

Follow-up, mean (standard deviation)

Within group change, LSMeans (standard error)

LSMeans (90% CI) P value

6-month change in 6-min walk distance (meters)

337.79

(90.88)

N = 61

335.47 (93.23)

N = 61

−0.24

(5.81)

325.60 (112.51)

N = 29

324.58 (89.63)

N = 28

−14.29

(9.97)

+14.05

(−1.25, +∞)

P = 0.12

3-month change in 6-min walk distance (meters)

337.79

(90.88)

N = 61

335.90 (90.27)

N = 50

3.92

(5.61)

325.60 (112.51)

N = 29

324.03 (106.23)

N = 24

−21.34

(9.66)

+25.25

(10.43, +∞)

P = 0.015

Maximal treadmill walking time (min)

8.84

(4.64)

N = 18

9.46 (3.82)

N = 18

0.73

(0.64)

7.14 (3.44)

N = 8

6.13 (3.69)

N = 8

−1.33

(1.28)

+2.06

(0.24, +∞)

P = 0.075

WIQ distance score (0-100 scale, 100-best)

42.80

(29.96)

N = 61

42.20 (29.82)

N = 61

−0.21

(2.94)

42.23 (24.36)

N = 28

48.60 (34.81)

N = 28

6.89

(5.29)

−7.10

(−15.19, +∞)

P = 0.87

Physical activity-total activity counts/day

94,845

(49064)

N = 53

90,532 (50,669)

N = 53

−1824

(4763)

86,396 (57,208)

N = 25

83,567 (53,856)

N = 25

−12819

(8528)

+10,995

(−2078, +∞)

P = 0.14

Physical activity –counts per min

471.87

(152.11)

N = 53

455.90 (134.74)

N = 53

−9.20

(11.77)

437.44 (116.09)

N = 25

435.23 (124.84)

N = 25

−17.44

(20.95)

+8.24

(−23.85, +∞)

P = 0.37

  1. For the 6-min walk outcomes, mixed models for repeated measures (MMRM) were used to compare change in 6-min walk distance between the combined NR and NR + resveratrol groups and the placebo group, adjusting for age, sex, race, resveratrol randomization, and baseline 6-min walk. For other outcomes, analysis of covariance (ANCOVA) was used, adjusting for baseline values for each outcome, age, sex, race, and resveratrol randomization. The a priori statistical analysis plan defined a one-sided P value of <0.10 to define statistical significance.