title: Functional versus structural social support and health care utilization in a family medicine outpatient practice.
abstract: Three hundred forty-three family-practice patients were surveyed by questionnaire and medical record audit to evaluate the relationships between social support and medical care utilization. Social support was not associated with laboratory test ordering. The mean number of office visits per year was higher for patients with low versus high confidant support (4.71 vs. 3.81, P less than 0.10) and affective support (5.21 vs. 3.60, P less than 0.05). Mean total charges in 1 year were higher for patients with low versus high confidant support ($232 vs. $148, P less than 0.05) and affective support ($244 vs. $154, P less than 0.05). Poor confidant and affective support were both associated with longer visits. Structural measures of social support were not related significantly to any utilization indicator. These findings were maintained in multiple-regression models controlling for physical health and seven demographic characteristics. Second-order regression models revealed interaction by race, employment status, and sex. Blacks showed no effect of confidant support on office visits. Poor confidant support resulted in $201 more in total charges for the unemployed (P = 0.003) versus $49 more for the employed (P = 0.15). Women with low affective support had $119 more in charges (P = 0.001) versus $16 less for men (P = 0.82). The results suggest that low functional social supports are important determinants of increased medical service utilization and that they may have differential effects by race, sex, and employment status, all of which should be considered independently in future studies.
authors: Department of Community and Family Medicine, Duke University Medical Center, Durham, North Carolina 27710.
authors: W E
authors: WE
authors: Broadhead
authors: S H
authors: SH
authors: Gehlbach
authors: F V
authors: FV
authors: deGruy
authors: B H
authors: BH
authors: Kaplan
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D003365:Costs and Cost Analysis; D003430:Cross-Sectional Studies; D005194:Family Practice / Q000191:economics / Q000706:statistics & numerical data*; D005260:Female; D006296:Health Services / Q000191:economics / Q000706:statistics & numerical data*; D006801:Humans; D008297:Male; D008875:Middle Aged; D009657:North Carolina; D009819:Office Visits / Q000191:economics / Q000706:statistics & numerical data; D012931:Social Environment; D012944:Social Support; D012959:Socioeconomic Factors; D014478:Unemployment