Weighted Average Maturity Date

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Weighted Average Maturity Date

The average amount of time remaining before the securities in a portfolio reach maturity, weighted by the percentage of the portfolio that each security constitutes. For example, suppose a portfolio contains two bonds, one worth $10,000 and one worth $20,000, for a total of $30,000. The $10,000 bond matures in five years, and the $20,000 bond in 10 years. The weighted average remaining maturity date is calculated as:

WAMD = ($10,000 / $30,000) * 5 years + ($20,000 / $30,000) * 10 years = 8 1/3 years
References in periodicals archive ?
The Mann-Whitney U test was used to compare data between the wAMD, dAMD, and control groups and to compare MDA levels at baseline and after 3 months.
The study included 20 patients in the wAMD group (10 males, mean age 71.8 [+ or -] 11.0 years), 20 patients in the dAMD group (13 males, mean age 70.6 [+ or -] 12.5 years), and 24 patients in the control group (11 males, mean age 68.2 [+ or -] 10.2 years).
We observed a 15.0% increase in mean serum MDA in the wAMD group (9.94 [+ or -] 1.53 pmol/mL) compared with the control group (9.04 [+ or -] 0.96 pmol/mL, P = 0.031).
Representative images of CNV in eyes with wAMD and GA area in eyes with dAMD are shown in Figure 2.
In the wAMD group, there was a significant correlation between baseline MDA levels and CNV area (P = 0.038, r = 0.39, Figure 3(c)), although we did not detect significant correlations between MDA levels and age (P = 0.31, Figure 3(a)) or logMAR BCVA (P = 0.13, Figure 3(b)).
In patients with wAMD, MDA levels were significantly correlated with CNV area (Figure 3(c)).
In conclusion, we demonstrated that elevated serum MDA levels were directly associated with the area of CNV lesions in eyes with wAMD and that nutritional supplements appear to protect the eyes from systemic oxidative damage.
Caption: Figure 1: Serum MDA levels in the study population and changes in MDA levels in wAMD patients that received nutritional supplementation.