Table 2.

Age effects on pain intensity and disability (adjusted for gender, education, and marital status)

	Pain Intensity†	Self-Reported Disability‡				Performance-Based Disability†
	MPI-D Pain Intensity	MPI-D Social and Leisure Activities	MPI-D Household Activities	MPI-D Out-of-Home Activities	MPI-D Activities (Sum Score)	Back Performance Scale	Physical Impairment Scale
Predictors
Age linear	−0.08±0.12	0.06±0.16	−0.13*±0.12	−0.01±0.09	−0.12±0.13	0.34***±0.12	0.30***±0.13
Age quadratic		−0.27**±0.16
R2	0.14	0.11	0.25	0.17	0.03	0.18	0.12

Reported are M±SD and standardized regression coefficients (β, ±95% symmetric confidence interval).

MPI-D = German version of the West Haven-Yale Multidimensional Pain Inventory.

^*P < 0.05;

^**P < 0.01;

^***P < 0.001.

^†Higher scores indicate higher pain intensity/higher disability.

^‡Higher scores indicate higher activity engagement.