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1988 and 1996 Survey of Illinois Pediatricians

Helen J. Binns, MD, MPH; Susan LeBailly, PhD; H. Garry Gardner, MD; for the Pediatric Practice Research Group

Arch Pediatr Adolesc Med. 1998;152:585-592.

Objectives  To contrast practices of physicians' office laboratories in the years 1988 and 1996 and ascertain physicians' perception of the effect of the Clinical Laboratory Improvement Amendments of 1988 (CLIA).

Design  Mailed surveys to members of the Illinois chapter of the American Academy of Pediatrics in 1988 and 1996.

Subjects  There were 525 and 980 respondents in 1988 and 1996, respectively; analyses included 282 and 374 surveys representing offices where direct patient care was provided in a nonhospital setting. A paired analysis was also conducted on 101 offices that responded to both surveys.

Results  There was a decline from 1988 to 1996 in the percentage of offices doing in-office laboratory testing (93% to 84%, respectively; ²test; P<.01) and median number of types of tests (6 tests vs 4 tests; Mann-Whitney U test; P<.001). Decreases (²test; P <.01) were seen in the proportion of offices offering throat culture for group A streptococci (63% to 33%), urinalysis (54% to 33%), urine culture (53% to 22%), rapid hemagglutination slide test for mononucleosis (42% to 17%), theophylline level (27% to 4%), and total cholesterol (22% to 13%). The proportion of offices offering urine dipstick, hematocrit or hemoglobin, complete blood cell count, and stool occult blood tests remained stable. For solo practitioner offices only, streptococcal antigen detection testing decreased (66% to 39%; ²test; P<.001). Findings in the paired analyses were similar. In 1996, more offices participated in a formal proficiency testing program (60% vs 11%; ²test; P<.001). The CLIA guidelines were deemed responsible for increased documentation (58%), discontinuing 1 or more tests (56%), increased frequency of quality control (50%), joining a proficiency program (40%), and increased cost to patients (32%).

Conclusions  These surveys provide large-scale data concerning change in office-based laboratories of physicians serving children during an 8-year period. Office laboratories reduced their menu of tests and enhanced documentation and quality control for the tests that were done. Data like these in multiple specialties over time contribute to a comprehensive picture of the effects of CLIA on office laboratory practices.

From the Departments of Pediatrics, Children's Memorial Medical Center, Northwestern University, Chicago (Drs Binns and LeBailly); and Loyola University Medical Center, Maywood (Dr Gardner), Ill.

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