Table 2: Plasma GDF-15 levels in different grades of PH in PAH-CHD group.

GDF-15 (nmol/ml)

Grades of PH

p

Mild

(n = 20)

Moderate

(n =14)

Severe

(n =16)

Mean ± SD.

0.4 ± 0.1

0.7 ± 0.3

1.1 ± 0.1

Post –Hoc analysis

Mild vs moderate

Mild vs severe

Moderate vs severe

 

p1=0.02*

p2=0.002*

p3=0.001*

p: p value for association between different grades of PH.

p1: p value for comparison between mild and moderate PH.

p2: p value for comparison between mild and severe PH.

 p3: p value for comparison between moderate and severe PH.

*means significant, GDF: growth differentiation factor, PH: pulmonary hypertension