Table 2.

Multivariate logistic regression analysis of factors associated with proximal junctional disease, kyphosis, and failure risk factors

Risk factor	Estimate	CI 95% lower	CI 95% upper	P
PJD
Age at surgery	0.00617	0.00321	0.01273	0.002
Gender (female)	−0.37632	−0.62129	−0.01213	0.04
DM (yes)	−0.02908	−0.14732	0.09816	0.6
CCI	−0.01906	−0.04955	−0.01142	0.2
ASA score	0.00552	−0.05702	0.06806	0.8
BMI	0.11749	−0.03520	0.09311	0.8
Smoking (yes)	0.01937	−0.3659	0.07534	0.5
PLVI	0.11508	0.00494	0.22523	0.03
M-Score	0.11243	0.02030	0.30112	0.04
PJF
Age at surgery	0.00647	0.00131	0.01162	0.01
Gender (female)	−0.05284	−0.11485	0.00917	0.09
DM (yes)	−0.07348	−0.17839	0.013143	0.2
CCI	−0.01530	−0.04109	0.01050	0.2
ASA score	−0.00833	−0.06120	0.04455	0.7
BMI	0.00308	−0.00473	0.01089	0.4
Smoking (yes)	0.01060	−0.05000	0.07121	0.7
PLVI	−0.26592	−0.52138	−0.01047	0.04
M-Score	0.11403	0.02030	0.20776	0.01
PJK
Age at surgery	1.5234	−0.00287	0.00337	0.8
Gender (female)	−0.00307	0.01871	−0.04000	0.2
DM (yes)	−0.01529	0.03239	−0.07920	0.9
CCI	−0.00148	−0.02801	0.01353	0.8
ASA score	−0.00374	−0.02801	0.03550	0.8
BMI	−0.00266	−00734	0.00202	0.3
Smoking (yes)	−0.00737	−0.04372	0.02899	0.7
PLVI	0.10042	0.00684	0.19342	0.02
M-Score	−0.26592	−0.52138	−0.01047	0.04

PVLI - Psoas lumbar vertebral index, CI - Confidence interval, PJD - Proximal junctional disease, PJF - Proximal junctional failure, PJK - Proximal junctional kyphosis, ASA - American Society of Anesthesiology, CCI - Charlson Comorbidity Index, BMI - Body mass index, DM - Diabetes mellitus