Table 3: Characteristics of the Attenuation Patterns Observed

Attenuation Type	Prevalence	Gender	Effect of Chest Size on Prevalence	Effect of BMI on Prevalence	Factors that Increase Severity
Anterior	Common	F > M	+ in M - in F	-	BMI
Inferior	Most common	M > F	-	-	None
Lateral	Least common	F > M	-	+	None