Glycated hemoglobin A1c level on the day of emergency surgery is a marker of premorbid glycemic control: a retrospective observational study

Table 2 Results of linear regression analysis to determine the associations between factors and change in HbA1c

Factors	r²	P-value
Age	0.04	0.19
Sex	0.0003	0.91
ASA PS	0.001	0.81
Insulin treatment	0.35	< 0.001
Operation time	0.02	0.29
Operation categories (cardiovascular surgery vs others)	0.006	0.59
Duration between measurements of the two HbA1c levels.	0.02	0.36

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