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. 2022 Dec 26;9:1071804. doi: 10.3389/fsurg.2022.1071804

Table 4.

Comparison patients with/without AE: y, years; f/m, female/Male; KPS, Karnofsky performance score; Pre, preoperative; post, postoperative; RPA, recursive partitioning analysis; y/n, yes/no; BM, brain metastasis; n, number; RT, radiotherapy; Gy, gray; LOS, length of surgery; LORT, length of radiotherapy; AE, adverse event; LOH, length of hospitalization; d, days; data is shown as [mean ± SD/median (interquartile range)] with level of significance p.

Patients with AE (n = 9) Patients without AE (n = 61) p-value
Age (y) 64.4 ± 8.9 65.3 ± 11.5 .82
sex (f/m) 4/5 36 /25 .41
KPS Pre (%) 80 [80–90] 80 [80–90] .99
KPS Post (%) 80 [30–80] 90 [80–90] <.01
RPA 2 [2–2] 2 [2–2] 1
Total BM (n) 1.4 ± 0.7 1.7 ± 1.1 .51
BM size (cm3) 2.5 ± 0.9 3.3 ± 1.3 .08
Applicator size (cm3) 2.1 ± 0.5 2.4 ± 0.7 .29
RT Dose (Gy) 2 [1.5–2.5] 2.5 [2–3] .91
LOS (min) 157 ± 72 154 ± 39 .84
LORT (min) 10 ± 4 10 ± 4 .61
LOH (d) 12 ± 8 7 ± 3 <.001