Table 4.

Correlation coefficient analysis of plasma ANP levels at 24 h after inclusion with ALC on day 5 after inclusion and recovery of ALC on day 5 after inclusion.

	ALC on day 5 after inclusion			Recovery of ALC on day 5 after inclusion
	Total	Good-sleep	Poor-sleep	Total	Good-sleep	Poor-sleep
Plasma ANP levels at 24 h after inclusion	r = 0.192 P = 0.262	r = 0.130 P = 0.565	r = 0.168 P = 0.567	r = 0.394* P = 0.018	r = 0.470* P = 0.027	r = 0.527* P = 0.044

ALC, absolute lymphocyte count; ANP, atrial natriuretic peptide.

^*P < 0.05 was considered statistically significant.