Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Bivariate plots of cement damage (top Cr.Dn, bottom Cr.Ln.Dn) versus duration of use, BMI and porosity fraction. The plots are overlaid with the profiles of the regression models (solid lines) along with 95% confidence intervals (dashed lines). Results of the multiple regression analyses are shown in Table 2.
