Rate of lumbar paravertebral muscle fat infiltration versus spinal degeneration in asymptomatic populations: an age-aggregated cross-sectional simulation study

Table 2 Regression estimates for yearly decline with synthetic Brinjikji data

Endpoint	n	b(age)	se(b)	95 % CI
Disk degeneration	1603	1.429	0.106	1.221–1.637
Disk signal loss	613	1.939	0.238	1.472–2.405
Disk height loss	572	1.065	0.224	0.626–1.505
Disk bulge	430	0.985	0.224	0.545–1.425
Disk protrusion	1408	0.247	0.140	−0.027–0.522
Annular fissure	996	0.146	0.157	−0.162–0.455
Facet degeneration	849	1.050	0.218	0.624–1.477
Spondylolisthesis	284	0.288	0.131	0.032–0.544

b(age) regression estimate of yearly decline per age year, se(b) standard error of b(age), n sample size, CI 95 % confidence interval

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