a. Are there any significant results? If so, which P values…
Questions
а. Are there аny significаnt results? If sо, which P values are significant? Hоw dо you know if a result is significant? b. Are there any highly significant results? If so, which P values are significant? How do you know if a result is highly significant? c. what type of study design was used here? How do you know? ________________________________________________________________ Twilight and low luminance levels are visually challenging environments for the elderly, especially when driving at night. Carotenoid rich diets are known to increase macular pigment optical density (MPOD), which in turn leads to an improvement in visual function. It is not known whether augmenting MPOD can lead to a decrease in vision related night driving difficulties. Additionally, it is unknown if carotenoid supplementation provides additional measurable benefits to one's useful field of view (UFOV) along with a decreased composite crash risk score. Participants received either a 14 mg zeaxanthin/7 mg lutein-based supplement or placebo. Thirty-three participants (26 males/7 females) participated with 93% capsule intake compliance in the supplemented group (n = 24) and placebo group (n = 9). MPOD (mean/standard error SE) in the active group increased in the Right eye (p < 0.001) and in the Left eye (p > 0.05). The supplemented group showed significant improvements in contrast sensitivity with glare in both eyes with improvements in LogMAR scores of 0.147 (p = 0.02) and 0.149 (p = 0.01). Monocularly tested glare recovery time improved 2.76 and 2.54 s, respectively, (p = 0.008 and p = 0.02), and we also noted a decreased preferred luminance required to complete visual tasks (p = 0.02 and 0.03). Improvements in UFOV scores of divided attention (p < 0.001) and improved composite crash risk score (p = 0.004) were seen in the supplemented group. The placebo group remained unchanged. The NVC demonstrates that augmenting MPOD in individuals with difficulty in night vision showed measurable benefits in numerous visual functions that are important for night vision driving in this small sample RCT. Additionally, we observed an improvement in UFOV divided attention test scores and decreased composite risk scores.
A jоurnаl entry cоntаining mоre thаn one debit and/or more than one credit is called a(n):