Disparities in the Diagnosis and Management of Infants Hospitalized With Inadequate Weight Gain.

Objectives: To evaluate the association between race and the named etiology for inadequate weight gain among hospitalized infants and assess the differences in management.

Methods: This single-center retrospective cohort study of infants hospitalized for the workup and management of inadequate weight gain used infant race and neighborhood-level socioeconomic deprivation as exposures. The etiology of inadequate weight gain was categorized as nonorganic, subjective organic (ie, gastroesophageal reflux and cow's milk protein intolerance), or objective organic (eg, hypothyroidism). The management of inadequate weight gain was examined in secondary outcomes.

Results: Among 380 infants, most were white and had a nonorganic etiology of inadequate weight gain. Black infants had 2.3 times higher unadjusted odds (95% credible interval [CI] 1.17-4.76) of a nonorganic etiology of inadequate weight gain compared with white infants. After adjustment, there was no association between race and etiology (adjusted odds ratio 0.8, 95% CI [0.44-2.08]); however, each 0.1 increase in neighborhood-level deprivation was associated with 80% increased adjusted odds of a nonorganic etiology of inadequate weight gain (95% CI [1.37-2.4]). Infants with a nonorganic etiology of inadequate weight gain were more likely to have social work and child protective service involvement and less likely to have nasogastric tube placement, gastroenterology consults, and speech therapy consults.

Conclusions: Infants from neighborhoods with greater socioeconomic deprivation were more likely to have nonorganic causes of inadequate weight gain, disproportionately affecting infants of Black race. A nonorganic etiology was associated with a higher likelihood of social interventions and a lower likelihood of medical interventions.