Health literacy in cancer caregivers: a systematic review

Cancer caregivers play a vital role in the care and health decision-making of cancer survivors. Consequently, their health literacy levels may be particularly important, as low levels may impede adequate care provision. As such, the current review aimed to systematically examine the literature on health literacy amongst cancer caregivers.

We systematically searched the following databases using controlled vocabulary and free-text terms: PsychINFO, MEDLINE, EMBASE, CINAHL and Web of Science. Peer-reviewed empirical studies that explicitly measured and reported cancer caregiver health literacy levels were included.

The search yielded six articles consisting of 593 cancer caregivers exploring health literacy and eHealth literacy. There was substantial variation in health literacy measurement tools used across included studies, precluding the possibility of conducting a meta-analysis. The included articles reported significant associations (limited to single studies) between caregiver health/eHealth literacy and (i) cancer survivor demographics, (ii) caregivers' communication style, (iii) caregiver Internet access and (iv) caregiver coping strategies.

Findings highlight a need for future longitudinal research regarding cancer caregiver health literacy incorporating more standardized and population-specific measurement approaches. In particular, there is a pressing need to investigate factors associated with cancer caregiver health literacy to inform the development/delivery of future interventions.

Future high-quality research which investigates the factors which contribute towards sub-optimal health literacy amongst cancer caregivers would aid in the development of appropriate and effective health literacy interventions in these groups. Such interventions would allow this important group to provide appropriate support to cancer survivors and enhance survivors' engagement in their health and wellbeing.