Table 4. Influence analysis of albumin at 12 months of NHD versus controls CHD.

	Mean difference	95% confidence interval	P-value
Omitting Demirci (2013)	0.72	-1.11–2.55	0.44
Omitting Kaysen (6x per week) (2012)	1.09	-1.97–4.14	0.486
Omitting Spanner (2003)	1.92	1.01–2.83	0.000
Pooled estimate	1.57	0.39–2.76	0.009