State Legislators' Support for Behavioral Health Parity Laws: The Influence of Mutable and Fixed Factors at Multiple Levels.

Abstract

We conducted a multimodal (post mail, email, telephone) survey of US state legislators in 2017 (N = 475). The dependent variable was strong support for C-SBHPL, and the independent variables included legislators' fixed and mutable characteristics and state-level contextual factors. We conducted multivariable, multilevel (legislator, state) logistic regression. Thirty-nine percent of the legislators strongly supported C-SBHPL. After adjustment, the strongest predictors of C-SBHPL support were beliefs that C-SBHPL increases access to behavioral health treatments (aOR = 5.85; 95% CI = 2.41, 14.20) and does not increase insurance premiums (aOR = 2.70; 95% CI = 1.24, 5.90). Stigma toward people with mental illness was inversely associated with support (aOR = 0.86; 95% CI = 0.78, 0.95). After adjustment, ideology was the only fixed characteristic significantly associated with support for C-SBHPL. State-level contextual factors did not moderate associations between mutable characteristics and support for C-SBHPL. Legislators' mutable characteristics are stronger predictors of C-SBHPL support than are most of their fixed characteristics and all state-level contextual factors, and thus should be targeted by dissemination efforts.