3.2.2. Univariate Analyses: Healthy Behavioral Change Index

As Table 2 shows, older age, female gender, living with someone aged >65, and unemployed work status were all negatively associated with self-reported changes in healthy lifestyle behaviors. Conversely, Black and Hispanic race/ethnicity, being college educated, married, having a household income over USD 75,000, living with someone aged <18, being more adherent to stay-at-home and social distancing guidelines, and practicing more hand hygiene/sanitization were all positively associated with increases in healthy lifestyle behaviors.

**Table 2.** Univariate and multivariable linear regression analyses showing healthy behavioral change. Index <sup>a</sup> as a function of individual-level determinants b.



**Table 2.** *Cont.*

<sup>a</sup> The healthy behavioral change index includes physical activity and healthy eating, and scores range from +2 to −2. <sup>b</sup> Individual-level determinants include sociodemographic, mental health, and behavioral (i.e., adherence to COVID-19 mitigation strategies) factors. <sup>c</sup> Living arrangement was not included in the final model due to collinearity with lives with someone aged >65 and lives with child aged <18. <sup>c</sup> Individuals categorized as having depression or anxiety met the criteria for "caseness" (T-score > 60) on the PROMIS 4-item short-form depression and anxiety measures.

#### 3.2.3. Multivariable Analysis: Healthy Behavioral Change Index

Multivariable regression revealed that individuals who adhered more to social distancing guidelines were more likely to engage in more healthy lifestyle behaviors (β = 0.12, 95% CI 0.04 to 0.21), relative to those who adhered less In addition, women (β = −0.37, 95% CI −0.62 to −0.12), and unemployed individuals (β = −0.33, 95% CI −0.64 to −0.02) were less likely to report engaging in more healthy lifestyle behaviors, relative to men and employed individuals (Figure 1A and Table 2).

#### *3.3. Changes in Addictive Lifestyle Behaviors*

3.3.1. Univariate Analyses: Addictive Lifestyle Behavioral Change

Detailed results of the Pearson's chi-square (χ2) and one-way ANOVAs to assess associations between each of the individual-level determinants and each of the addictive lifestyle behavioral change variables are presented in Supplemental Table S2.
