A Study Was Conducted to Assess the Relationship Between Serum

A study was conducted to assess the relationship between serum HDL2 level (a subfraction of HDL) and carotid intima-media thickness as a marker of atherosclerosis.  Interpretation of the results revealed a linear relationship between these 2 variables, with a correlation coefficient r = -0.25 (p = 0.005) .  Which of the following statements about the results of the study is the most correct?

A) As HDL2 level increases, there is an associated decrease in carotid intima-media thickness
B) Decreased HDL2 level is the cause of carotid intima-media thickening
C) The association is not statistically significant
D) There is a strong correlation between HDL2 level and carotid intima-media thickness
E) There is a positive correlation between HDL2 level and carotid intima-media thickness

Correct Answer:

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