1. Linda McCaig and David Woodwell Ambulatory Care Statistics Branch Division of Health Care Statistics National Center for Health Statistics/CDC Using NAMCS and NHAMCS Data

8. How are NAMCS and NHAMCS data used?

13. Antibiotic prescribing rates at physician office visits for children Rate per 1000 population Rate per 1000 visits

15. Prescribing rates at physician office visits by specialty Psychiatry Ophthalmology Otolaryngology Orthopedic surgery

16. Female ambulatory care visit rates for selected diagnoses by race

17. Annual rate of illness and injury ED visits for seniors by race Illness, black 1 Illness, white 1 Injury, black 1 NOTE: 1 p < .01. Injury, white

18. Diabetes visit rates per 10,000 persons by setting 49 147 1289 1998-99 38 157 1118 1996-97 36 117 865 1994-95 33 84 962 1992-93 ED OPD Office Year

19. NAMCS and NHAMCS Methodology

32. NAMCS and NHAMCS 1999-2000 PRFs

40. NAMCS and NHAMCS PRF revisions 2001-02 – emphasis on the continuity of care

43. NAMCS and NHAMCS PRF revisions 2003-04

48. Analysis of Facility Level Data

49. Percent of physicians who do not accept new patients by payment type

50. Distribution of hospital EDs on average waiting time

59. NAMCS Response rates

60. NHAMCS Response rates ED OPD

64. Data dissemination

69. Comparison of RSEs Physician assistant Seen by Cardiac monitor IV fluids Admitted to hosp 0 5 10 15 20 RSE In-house Masked GVC

70. Comparison of RSEs for ED visits by age Patient age in years In-house Public-use 1-stage gvc <15 15-24 25-44 45-64 65-74 75+ 0 5 10 15 RSE

73. http://www.cdc.gov/nchs/about/major/ahcd/ahcd1.htm

74. NCHS Research Data Center