Table 3.
Era 1 (2002 – 2006) N=649 (22.4%) |
Era 2 (2007 – 2011) N=1028 (35.5%) |
Era 3 (2012 – 2016) N=1219 (42.1%) |
p-value* | ||||||
---|---|---|---|---|---|---|---|---|---|
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Overall | Era 1 vs. Era 2 | Era 2 vs. Era 3 | |||||||
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Unadjusted costs | |||||||||
No VAD | $661,353 | ($566,546– $772,024) | $663,489 | ($572,798– $768,540) | $596,058 | ($517,596– $686,415) | 0.056 | 0.953 | 0.029 |
With VAD | $986,549 | ($723,476– $1,345,283) | $1,096,136 | ($917,845– $1,309,061) | $917,043 | ($788,634– $1,066,360) | 0.197 | 0.533 | 0.072 |
Adjusted costs | |||||||||
No VAD | $721,882 | ($471,513– $1,105,194 | $721,813 | ($470,717– $1,106,853 | $612,681 | ($399,713– $939,119) | 0.002 | 0.999 | < 0.001 |
With VAD | $1,273,933 | ($542,009– $2,994,241) | $1,176,332 | ($512,326– $2,700,933) | $975,842 | ($425,680– $2,237,049) | 0.108 | 0.672 | 0.068 |
p-values from generalized linear mixed models
Cost expressed as least squares mean (Lower and Upper 95% confidence interval), inflated to 2016 dollars