Hospitals were excluded if they did not use the newest data collection form (Form D) for at least half of the births.
Eight counties had no hospital reporting on at least 50% of data on Form D: Siskiyou, Humboldt, Mendocino, Amador, Nevada, El Dorado, Tuolumne, Madera.
Using only Form D, 12 counties had too few births with known feeding to report: Alpine, Calaveras, Colusa, Glenn, Mariposa, Mono, Modoc, Plumas, San Benito, Sierra, Trinity, Yuba.
- Alameda
- Butte
- Contra Costa
- Del Norte
- Fresno
- Imperial
- Inyo
- Kern
- Kings
- Lake
- Lassen
- Los Angeles
- Marin
- Merced
- Monterey
- Napa
- Orange
- Placer
- Riverside
- Sacramento
- San Bernardino
- San Diego
- San Francisco
- San Joaquin
- San Luis Obispo
- San Mateo
- Santa Barbara
- Santa Clara
- Santa Cruz
- Shasta
- Solano
- Sonoma
- Stanislaus
- Sutter
- Tehama
- Tulare
- Ventura
- Yolo

