Elsevier

Social Science & Medicine

Volume 56, Issue 6, March 2003, Pages 1335-1344
Social Science & Medicine

Sociological influences on antidepressant prescribing

https://doi.org/10.1016/S0277-9536(02)00132-6Get rights and content

Abstract

This study examined how patient characteristics, physician characteristics, the physician's interaction with the health care system, and the physician's interaction with the patient influenced whether patients with a depression diagnosis received an antidepressant prescription and whether they received a SSRI antidepressant, a non-SSRI antidepressant, or both.

The 1998 National Ambulatory Medical Care Survey (NAMCS), in the USA, was used for the analysis. Logistic regression was used to examine what characteristics influenced whether a patient with a depression diagnosis received an antidepressant prescription. Next, a multinomial logistic regression model was applied to examine the relative risk of using one type of antidepressant versus another among antidepressant users while correcting for possible sample selections using the Heckman selection model. Sixty-seven percent of patients with a depression diagnosis received an antidepressant. Patients who were seeing providers who were not primary care physicians or psychiatrists, self-paying patients, and patients with neurotic depression were significantly less likely to receive an antidepressant prescription. Patients with depression listed as their first diagnosis were significantly more likely to receive an antidepressant prescription. Patients seeing a psychiatrist were more likely than patients seeing a primary care physician to receive a non-SSRI antidepressant than a SSRI antidepressant. Patients belonging to an HMO that had capitated visits were over four times more likely to receive non-SSRI antidepressants than SSRI antidepressants. Patients with major depression were significantly more likely to receive a non-SSRI antidepressant. Patients with depression as their primary diagnosis and patients who saw psychiatrists were significantly more likely to receive both SSRI and non-SSRI antidepressants rather than just SSRI antidepressants. Patient characteristics, physician characteristics, the physician's interaction with the health care system, and the physician's interaction with the patient all influenced antidepressant prescribing. An especially important finding was that insurance status influenced whether patients received an antidepressant. Health care providers need to take the time to help patients without insurance obtain antidepressant medication if it is needed.

Section snippets

Background

The use of antidepressants in the United States is an increasingly important issue. Antidepressant use increased by 73.4 percent between 1990 and 1995 according to national estimates, with the majority of the increase seen in the use of selective serotonin reuptake inhibitors (SSRIs) (Pincus et al., 1998). This trend is also being seen in other industrialized countries such as the United Kingdom (Martin, Hilton, Kerry, & Richards, 1997). The SSRIs have been found to be as efficacious for

Data and strategy

The 1998 National Ambulatory Medical Care Survey (NAMCS) was used to examine the treatment patterns of depressed patients in ambulatory settings. The NAMCS is a national probability sample administered by the Division of Health Care Statistics, National Center for Health Statistics (NCHS), Center for Disease Control and Prevention (CDC). It is a survey of office-based physician practices evaluating patient office visits. Visits with federally employed physicians, visits occurring outside of an

Results

Table 1 presents the descriptive statistics of the adults being seen for depression. Sixty-seven percent of the visits were female patients and close to 86 percent were non-Hispanic white. Approximately 50 percent of the depression-related ambulatory outpatient visits had private insurance as the primary payer and 29 percent of visits belonged to a health maintenance organization. Sixty-seven percent of patients received antidepressant medications during their visits. Close to 39 percent

Discussion

Our analyses indicated that Eisenberg (1979) was correct in that physician prescribing of antidepressants was influenced by four main factors: patient characteristics, physician characteristics, the physician's interaction with the health care system, and the physician's relationship with the patient. In terms of patient characteristics, a predictor of whether patients received an antidepressant prescription was whether patients were self-paying versus whether they had private insurance.

Acknowledgements

This research was supported in part by a grant from the National Institute of Mental Health (R29 MH 56210).

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