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. Author manuscript; available in PMC: 2014 Sep 1.
Published in final edited form as: Surgery. 2013 Sep;154(3):461–467. doi: 10.1016/j.surg.2013.05.036

Table 4.

Difference of increased Length of Stay for Q1, Q2, and Q3 compared to the wealthiest quartile, Q4.

Median Household Income Quartile
Difference of Increased Length of Stay Q1 Q2 Q3
Length of Stay (hour) 3.63 0.68 1.58
95% Confidence Interval 0.77–6.50 −2.20–3.57 −1.52–4.50