Influence of health literacy and trust in online information on food allergy quality of life and self-efficacy.

BACKGROUND: Health literacy among caregivers of food allergic individuals (FAIs) is poorly described, as are the information sources sought regarding food allergy.

OBJECTIVE: To assess the association among health literacy, trust in online sources of information, and food allergy quality of life (QoL) and self-efficacy.

METHODS: An online survey was administered to caregivers of FAIs assessing health literacy (Newest Vital Sign [NVS] and the eHeals Internet health literacy index), trust in online information (Hargittai Internet credibility index and Annenberg National Health Communication Survey [ANHCS]), QoL (Food Allergy Quality of Life Parental Burden), and self-efficacy (Food Allergy Self-Efficacy Questionnaire [FASEQ]).

RESULTS: Among 1562 respondents, 94.6% (NVS) and 61.1% (eHeals) had good health literacy, and 58% had high levels of trust in online information (both indexes). The NVS correlated poorly with the eHeals and Hargittai indexes. Hargittai and eHeals scores were moderately correlated (r = 0.37, P < .001). A high NVS score was significantly associated with reported anaphylaxis and high eHeals and Hargittai scores with advocacy group membership. In unadjusted analyses, FAQL-PB scores were worse with high Hargiatti scores (P = .05) and ANHCS scores (P < .001). The FASEQ scores were better with high ANHCS scores (P = .02) and eHeals scores (P < .001). In an adjusted regression, high trust in online information (both indexes), worsening FASEQ score, blog readership, advocacy group membership, caring for multiple FAIs, and having milk or egg allergy were associated with worse FAQL-PB scores.

CONCLUSION: In this sample, health literacy and trust in online information sources were high, with high trust in online information sources negatively associated with QoL. Advocacy group membership had an independent negative association with QoL.