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Outcomes of Patients Transferred to Tertiary Center by Life-Saving System in Saudi Arabia. A Propensity Score Matching Observational Study

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31 oct 2024

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Fig. 1.

Patients’ enrollment diagram
Patients’ enrollment diagram

Fig. 2.

Sub-group analysis
Sub-group analysis

Unmatched groups’ demographic and clinical characteristics

Variable DA (n = 2840) LS (n=328) Mean / Percent difference (95% CI) p value
Age § 45.1 ± 19.4 46.4 ± 20.9 −1.3 (−3.7, 1.05) 0.2*

Sex: Female 1135 (40%) 109 (33.2%) 6.7% (1.1%, 12.1%) 0.02

Admission Category
Fast Track 268 (9.44%) 6 (1.83%) 7.6% (5.3%, 9.2%) <0.001
Maternity 430 (15.14) 14 (4.27%) 10.9% (7.8%, 13.2%) <0.001
Medical 1096 (38.59%) 158 (48.17%) 9.6% (3.8%, 15.4%) 0.001
Surgical 778 (27.39) 93 (28.35%) 1% (−4.1%, 6.4%) 0.8
Trauma 268 (9.44%) 57 (17.38%) 7.9% (3.8%, 12.6%) <0.001
PMR § 19.1 ± 17.9 23.2 ± 21.3 −4.1 (−6.5,−1.7) 0.004*

Matched groups’ outcome comparisons

Variable DA (n=656) LS (n=328) Mean / Percent Difference (95% CI) P value
Mortality 216 (32.9%) 114 (34.8%) 1.9% (−4.5%, 8.4%) 0.6
LOS § 10 ± 13.1 11.6 ± 12.4 −1.6 (−3.2, 0.1)** 0.005*

Matched groups’ demographic and clinical characteristics

Variable DA (n = 656) LS (n=328) Mean / Percent difference (95% CI) p value
Age § 45.7 ± 20.1 46.4 ± 20.9 −0.7 (−3.5, 2.04) 0

Sex: Female 220 (33.5%) 109 (33.2%) 0.3% (−6.2%, 6.6%) 0.97

Admission Category
Fast Track 15 (2.29%) 6 (1.83%) 0.5% (−1.9%, 2.3%) 0.8
Maternity 25 (3.81%) 14 (4.27%) 0.5% (−2.1%, 3.6%) 0.9
Medical 317 (48.32%) 158 (48.17%) 0.2% (−6.6%, 6.9%) 0.98
Surgical 192 (29.27%) 93 (28.35%) 0.9% (−5.3%, 7%) 0.8
Trauma 107 (16.31%) 57 (17.38%) 1.1% (3.9%, 6.4%) 0.7
PMR § 23.9 ± 22 23.2 ± 21.3 0.7 (−2.2, 3.6) 0.8*