Table 4.

Correlation statistics

	P2X dependant toxin activity	Haemolytic activity	Pathogen-positive	Pathogen-negative
Correlation	Spearman r (confidence interval), n, p value	Spearman r (confidence interval), n, p value	Spearman r (confidence interval), n, p value	Spearman r (confidence interval), n, p value
P2X1 expression and change in haematocrit	− 0.82 (exact), 7, 0.0341	− 0.85 (− 0.95 to − 0.51), 11, 0.0015	− 0.80 (− 0.93 to − 0.45), 14, 0.0010	0.19 (− 0.31 to 0.60), 20, 0.4459
P2X1 expression and change in haemoglobin	− 0.79 (exact), 7, 0.0480	− 0.81 (− 0.95 to − 0.39), 11, 0.0039	−0.78 (− 0.93 to − 0.41), 14, 0.0014	0.19 (− 0.30 to 0.61), 20, 0.4372
P2X7 expression and change in haematocrit	0.2143 (exact), 7, 0.4444	− 0.19 (− 0.72 to 0.48), 11, 0.5619	0..02 (− 0.53 to 0.56), 14, 0.9363	0.22 (− 0.28 to 0.62), 20, 0.3749
P2X7 expression and change in haemoglobin	0.2143 (exact), 7, 0.3024	− 0.18 (− 0.71 to 0.49), 11, 0.5894	0.02 (− 0.53 to 0.56), 14, 0.9363	0.03 (− 0.44 to 0.50), 20, 0.8922

Values are given as Spearman r with confidence interval in brackets., number of patients included, and p value