Table 1.

Demographic data of patients who died within the 6 months follow-up

Parameter	Patient 1	Patient 2
Age (years)	86	80
Gender	Male	Female
Symptom duration (months)	3	6
Involved level	C3/4	C4/5
Preoperative JOA score	4	8
Surgical procedure (level)	French window laminoplasty (C3–6)	French window laminoplasty (C3–6)
Comorbidities	Pharyngeal cancer (postoperative)	Hypertension
Postoperative complications	None	Pneumonia
Cause of death	Unknown	Pneumonia