Table 1.

Summary of different fitting approaches used for fitting older adult spectra from the OCC using LCModel.

Approach	Abbreviation	MM used for fitting	Spline baseline constraint (DKNTMN)
Older MM, stiff	O-MM Stiff	Measured Older Adult	5
Older MM, flexible	O-MM Flex	Measured Older Adult	default (0.15)
Young MM, stiff	Y-MM Stiff	Measured Young Adult	5
Young MM, flexible	Y-MM Flex	Measured Young Adult	default (0.15)
LCModel, flexible	LCModel	LCModel NSIMUL = 11	default (0.15)