(For Appanoose, Clarke, Decatur, Jasper, Lucas, Marion, Monroe, Poweshiek, Ringgold & Wayne Counties) 1st Five is a public-private partnership bridging primary care and public health services in Iowa. The 1st Five model supports health providers in the earlier detection of social-emotional and developmental delays and family risk-related factors in children birth to 5 and coordinates referrals, interventions and follow-up.