Table 3.

Mean URR (95% CI) and intraclass correlations (ρ) for 196 centers before and after a Network-wide quality improvement program (QIP)

FacilitiesPre-QIPPost-QIP
Mean URRρMean URRρ
a Centers with post-QIP values divided into tertiles based on rank of mean URR before and after the QIP.
b P ≤ 0.01 when compared with pre-QIP ρ.
c P = 0.06 when compared with pre-QIP ρ.
All centers64.7 (64.4 to 64.9)0.15 (0.12 to 0.18)69.8 (69.6 to 70.0)0.06 (0.04 to 0.08)b
Pre-QIP RankingaPost-QIP Rankinga
Centers in tertilesMean URRρMean URRρ
    lowest tertile60.7 (60.3 to 61.1)0.28 (0.19 to 0.36)69.1 (68.7 to 69.5)0.07 (0.04 to 0.10)b66.7 (66.3 to 67.1)0.18 (0.11 to 0.24)c
    middle tertile65.1 (64.7 to 65.4)069.9 (69.5 to 70.3)0.09 (0.05 to 0.12)b70.0 (69.7 to 70.4)0
    highest tertile68.2 (67.9 to 68.5)0.17 (0.10 to 0.23)70.4 (70.0 to 70.8)0.06 (0.03 to 0.09)b72.5 (72.2 to 72.9)0.05 (0.02 to 0.09)b