Table 2.

Serum collagen peptide levels at baseline among responders and non-responders to CRT.

	Total (n = 60)	Responders (n = 38)	Non-responders (n = 22)	p value
PICP(ng/mL)	148[112–200]	135[99–166]	179[142–226]	0.001
ICTP(ng/mL)	1.09[0.82–1.40]	1.04[0.81–1.36]	1.16[0.83–1.71]	0.865
PINP(ng/mL)	3.85[3.39–4.53]	3.83[3.39–4.63]	3.93[3.38–4.5]	0.835
PIIINP(ng/mL)	6.65[4.24–9.94]	5.50[3.66–8.96]	8.01[5.01–10.86]	0,014
PICP/ICTP	126.5[92.9–215.9]	116.9[78.2–195.2]	158.7[106.1–323.8]	0.049
PIIINP/ICTP	58.5[39.5–108.5]	52.5[31–89]	92.5[44–118]	0.036

ICTP = Collagen type I C-terminal telopeptide; PICP = Procollagen type I C-terminal propeptide; PIIINP = Procollagen type III N-terminal propeptide PINP = Procollagen type I N-terminal propeptide.