HOUSES was categorised into quartiles using 604 patients with non-missing data (1st quartile (lowest SES) <−2.0215; 2nd quartile −2.0215 to 0.265; 3rd quartile 0.265 1.81; and 4th quartile (highest SES) ≥1.81)).
We separated our patients into 4 groups according to quartile of LAC⊿tw (group1; 1st quartile, group2; 2nd quartile, group3; 3rd quartile and 4th quartile; group4), and performed same analysis with LAC⊿.
The patients were placed in five groups based on total score, with the lowest quartile scores ranging from -7 to -1, the 2nd quartile 0 to 3, 3rd quartile 4 to 8, 75%to90%0% group 9 to 15, and the top 10% had scores of 16 and greater.
The following quartile values represent each severity level according to predicted CGI-BPD scores: 1st quartile: 3.59, 2nd quartile: 4.27; 3rd quartile: 4.9; 4th quartile: 6.63.
The significant trend for good neurologic outcomes was consistent, even in the subgroup of patients who achieved return of spontaneous circulation on hospital arrival (1st quartile, 0; 2nd quartile, 16.7%; 3rd quartile, 29.4%; 4th quartile, 53.3%; P < 0.05).
Even in this subgroup, the trend was significant for good neurologic outcomes across increasing oxy-Hb quartiles (1st quartile, 0; 2nd quartile, 16.7%; 3rd quartile, 29.4%; 4th quartile, 53.3%; Cochran Armitage trend test, P < 0.05) but not across rSO2 quartiles (12.5%, 0; 50.0%, and 48.4%, respectively; P = 0.14).
For a dataset (D = {d_1, d_2, ldots, d_n}), it first sorts them chronologically in ascending order and then categorizes into four quarters called (Q_1) (1st quartile), (Q_2) (2nd quartile) and (Q_3) (3rd quartile).
Regarding the results of hospital volume due to AMI, hospitals with higher AMI volumes were associated with lower 30-day mortality (1st quartile: 17.8%, 2nd quartile: 8.9%, 3rd quartile: 7.9%, 4th quartile: 7.3%; p<0.001).
Among boys, associations with BC were significant for commission errors (β = 8.88, 95% CI: 2.64, 15.1 for BC 2nd quartile; β = 9.17, 95% CI: 1.54, 16.8 for 3rd quartile; and β = 7.25; 95% CI: –0.17, 14.7 for 4th quartile, compared with the lowest quartile).
Within each race, subjects were divided into quartiles of plasma 25(OH D concentrations (blacks [1st or lowest quartile: 5 to 11 ng/mL; 2nd quartile: 12 to 16 ng/mL; 3rd quartile: 17 to 20 ng/mL; 4th or highest quartile: 21 to 39 ng/mL]; whites [1st or lowest quartile: 5 to 18 ng/mL; 2nd quartile: 19 to 22 ng/mL; 3rd quartile: 23 to 27 ng/mL; 4th or highest quartile: 28 to 46 ng/mL]).
The same association was found if the triple seropositivity rate was calculated for the MELD inter-quartile ranges (IQR) (1st quartile: 1.7% 2nd quartile: 6.6% 3rd quartile: 14.3% 4th quartile: 20.3%, p<0.01).
