Imaging Features of Artificial Intelligence Algorithm in the Analysis of Cerebral Protective Effect of Craniotomy Hematoma Removal under Propofol Anesthesia in Patients with Chronic Subdural Hematoma

Table 4

Markwalder classification comparison results of the two groups at each time period.

Time	Z
M1	−0.655	0.506
M2	−0.183	0.855
M3	−0.109	0.913
M4	−2.395	0.017
M5	−2.558	0.011

Note. M1, M2, M3, M4, and M5 represented the Markwalder grading of CSDH patients in the experimental group and the control group on the next day and after one week, one month, three months, and six months.