Table 3.
Time Period 1(Jan 07 - Oct 07; n = 4,058) | Time Period 2 (Oct 07 - Aug 08; n = 4,058) | Time Period 3 (Aug 08 - Jun 09; n = 4,058) | Time Period 4 (Jun 09 - Apr 10; n = 4,058) | |
---|---|---|---|---|
Mean | 0.34 | 0.28 | 0.22 | 0.24 |
SD | 0.9 | 0.8 | 0.8 | 0.8 |
F=17.6; df = 3; P < 0.001
Source: Centers for Medicare & Medicaid Services, Vascular Access Data Set as delivered by the Network Information Technology Support contractor to Fistula First Breakthrough Initiative contractor, January 2007 – April 2010.
AVF, arteriovenous fistula