https://www.stlouisfed.org/on-the-economy/2022/oct/estimating-affordability-chi… Created Thu, 06/10/2022 - 20:30 Updated Thu, 06/10/2022 - 20:30 Wages and child-to-staff ratios are key drivers of child care costs at licensed centers. A model shows the relationship between these factors and costs as a share of household income.