Efficacy of lumbar decompression under large-channel spinal endoscope in elderly patients with segmental lumbar spinal stenosis

Table 1 Comparison of general information

Parameter	Study group (n = 34)	Control group (n = 34)	t/χ²	P
Gender (n, male)	14	12	0.249	0.618
Age (year)	81.93 ± 11.98	80.98 ± 11.73	0.329	0.742
Smoking	8	6	0.249	0.618
BMI (kg/m²)	23.76 ± 2.31	23.69 ± 2.17	0.129	0.898
Comorbidity
Diabetes	9	12	0.621	0.431
Coronary heart disease	6	8	0.361	0.549
Hypertension	2	3	0.216	0.642

ISSN: 1749-799X