About Usefulness of Kalemia Monitoring after Blunt Liver Trauma

Table 3

Panel (a) reports the results of the paired 𝑇-test statistics of the null hypothesis 𝐻₀∶𝐸(Δ)=0 against the one-sided alternative 𝐻₁∶𝐸(Δ)<0, where Δ=Preop−𝐷_𝑖 with 𝑖=1,3,7.  Δ is the sample average of Δ across the 11 patients submitted to surgery. Panel (b) reports the results of the nonparametric Wilcoxon signed rank test of the null hypothesis 𝐻₀∶𝑄⁵⁰_Preop=𝑄_𝐷⁵⁰_𝑖 against 𝐻₁∶𝑄⁵⁰_Preop<𝑄_𝐷⁵⁰_𝑖 for 𝑖=1,3,7, where 𝑄⁵⁰ are the median values.

(a) 𝑇 test.

Variable	Δ	Std. Err.	𝑇-test	𝐻1∶𝐸(Δ)<0
D1	−.1272	.1940	−0.656	0.2633
D3	−.5181	.2672	−1.939	0.0406
D7	−.9272	.3057	−3.033	0.0063

(b) Rank test.

Variable	Σ𝑅	Std. Dev.	Rank test	𝐻1∶𝑄^50Preop<𝑄𝐷^50𝑖
D1	46	11.2250	−1.203	0.1146
D3	51	11.2308	−1.603	0.0545
D7	58	11.2472	−2.223	0.0131