Final answer:
A relative risk value of less than 1 indicates that the exposure to a risk factor decreases the likelihood of the health outcome of interest.
Step-by-step explanation:
If the relative risk (RR) is statistically < 1, it indicates a relationship between exposure to a risk factor and the health outcome of interest. Specifically, an RR value of less than one suggests that the exposure decreases the likelihood of the outcome. Relative risk is a measure used in epidemiology to compare the risk of a certain event occurring in two groups. If RR=1, it means there's no difference in risk between the two groups. An RR<1 indicates the risk of the outcome is lower in the exposed group compared to the unexposed group, whereas an RR>1 indicates a higher risk in the exposed group.