Deprivation and limitations in daily life in new onset kidney disease: a population study.

Background: Existing population research has evaluated inequities in health outcomes for people in deprived communities who have early kidney disease, but not the differences in their self-reported overall health and ability to manage daily life activities when they first present, or the additional burden for people of working age. Using their responses to the national Census in Scotland, we studied the self-reported overall health and impact on day-to-day life of people in deprived and affluent households who newly presented with evidence of kidney disease. Methods: Of 458 897 adult North Scotland residents, we included all 24 775 individuals who presented with new onset kidney disease (eGFR <60 ml/min/1.72 m2) in 2011-2014. We measured deprivation based on household (Census) and resident neighbourhood (index of multiple deprivation). We fitted proportional odds regression models that accounted for age, sex, comorbidities, and additional impairments (e.g. vision, hearing, learning difficulties). We further adjusted for self-reported mental health and living alone as potential mediators, and tested for interactions with working age (18-65 years), sex, and mental health. Results: Of 24 775 people newly presenting with kidney disease, already 11 115 (45%) reported limitations in their daily lives. People in the most deprived (vs least) neighbourhoods and households experienced 2-fold greater odds of worse self-reported health (adjusted odds ratio, OR 2.05, 1.81-2.32 neighbourhood; OR 1.93, 1.64-2.26 household); and greater limitation in day-to-day activities (OR 1.70, 1.49-1.95 neighbourhood; OR 1.65, 1.39-1.96 household). This pattern of inequity was even more pronounced (3-fold) among those of working age (interaction P < .0001). Conclusion: The association of deprivation with health and daily life represents an additional dimension of health inequity that is substantial, and evident from the earliest stages for people with kidney disease.