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Table 1 Comparison of age, sex distribution, and doses of anesthetics between young and aged mice (left column) and between surviving and deceased aged mice (right column)

From: Aged mice show an increased mortality after anesthesia with a standard dose of ketamine/xylazine

 young (n = 26)aged (n = 26)psurviving aged (n = 22)deceased aged (n = 4)p
age in months (mean ± SD)2.14 ± 0.2326.31 ± 2.15< 0.000126.18 ± 2.2627.0 ± 1.350.49
sex distribution [female: n (%)]17 (65%)18 (69%)0.7715 (68%)3 (75%)0.79
weight in g (mean ± SD)23.2 ± 3.432.8 ± 5.4< 0.000133.3 ± 5.030.2 ± 7.50.30
ketamine dose (mg/kg)87.9 ± 12.062.6 ± 10.3< 0.000161.4 ± 9.069.3 ± 16.00.17
xylazine dose (mg/kg)8.8 ± 1.26.3 ± 1.0< 0.00016.2 ± 0.96.9 ± 1.60.17