Impact of Out-of-Pocket Expenditure on Physical Therapy Utilization for Nonspecific Low Back Pain: Secondary Analysis of the Medical Expenditure Panel Survey Data

Janet Dolot; Deborah Viola; Qiuhu Shi; Matthew Hyland

doi:10.2522/ptj.20150028

Figures

Figure.

Flow diagram (unweighted participants). NSLBP=nonspecific low back pain, PCS-12 and MCS-12=Physical Component Score and Mental Component Score, respectively, of the Medical Outcomes Study 12-Item Short-Form Health Survey (SF-12).

Tables

Table 1.

Categorized Demographic Variables (Weighted Participants) (N=3,711,145)^{^a}

↵^a Asterisk indicates may not sum to N due to rounding.

Table 2.

Demographic, Outcome, Research, and Covariate Variables: Mean, Standard Deviation, and 95% Confidence Interval^{^a}

↵^a PCS-12 and MCS-12=Physical Component Score and Mental Component Score, respectively, of the Medical Outcomes Study 12-Item Short-Form Health Survey (SF-12).

Table 3.

Visits per Episode of Care by Strata: Mean, Standard Deviation, and 95% Confidence Interval^{^a}

↵^a Asterisk indicates reference category for regression equations.

Table 4.

Final Regression Model: Natural Log of Physical Therapy Visits per Episode of Care^{^a}

↵^a PCS-12 and MCS-12=Physical Component Score and Mental Component Score, respectively, of the Medical Outcomes Study 12-Item Short-Form Health Survey (SF-12); HRQL=health-related quality of life. Asterisk indicates significant at P<.05.

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Impact of Out-of-Pocket Expenditure on Physical Therapy Utilization for Nonspecific Low Back Pain: Secondary Analysis of the Medical Expenditure Panel Survey Data

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