title: Three years of a clinical practice guideline for uncomplicated pelvic inflammatory disease in adolescents.
abstract: OBJECTIVE
  To study the effect of continued use of a clinical practice guideline (CPG) on the course of admissions for uncomplicated pelvic inflammatory disease (PID) over 3 consecutive fiscal years (FY).
  
  
  METHODS
  Medical charts, computerized laboratory records, and hospital charge data were reviewed for 165 consecutive inpatient admissions of adolescents meeting clinical criteria for PID during FY 1994, 1995, and 1996. Data were analyzed to compare demographics, clinical variables, length of stay (LOS), and hospital charges (total, nursing, and pharmacy) across the three FYs.
  
  
  RESULTS
  Of admissions for clinical PID, 65% had a discharge diagnosis of PID. Of those, 90% were uncomplicated PID. Among admissions with a discharge diagnosis of uncomplicated PID, reductions were seen in mean LOS (3.75 days in FY 1994 vs. 3.24 days in FY 1995 vs. 3.08 days in FY 1996; p =.047), proportion of admissions lasting longer than 3 days (48% vs. 24% vs. 20%; p < or =.022), and mean pharmacy charge ($946 vs. $806 vs. $731; p =.002). For all admissions to CPG, mean LOS, proportion of prolonged admissions, and mean total and pharmacy charges also decreased over the first 2 years but increased in FY 1996. More patients in FY 1996 met the three major clinical criteria plus at least one additional criterion (76% in FY 1996 vs. 26% in FY 1994 and 53% in FY 1995; p <.0005) and had pelvic ultrasounds (80% in FY 1996 vs. 56% in FY 1994 and 45% in FY 1995; p < or =.001) than in other FYs.
  
  
  CONCLUSIONS
  Continued use of a CPG can reduce hospital LOS, charges, and prolonged admissions of adolescents with uncomplicated PID. Over 3 years, variations in clinical practice such as admitting sicker patients may attenuate the effect of the CPG.
authors.affiliation: Division of Adolescent/Young Adult Medicine, Children's Hospital, Harvard Medical School, Boston, MA 02115, USA. shrier@a1.tch.harvard.edu
authors.forename: L A
authors.initials: LA
authors.lastname: Shrier
authors.forename: S A
authors.initials: SA
authors.lastname: Moszczenski
authors.forename: S J
authors.initials: SJ
authors.lastname: Emans
authors.forename: M R
authors.initials: MR
authors.lastname: Laufer
authors.forename: E R
authors.initials: ER
authors.lastname: Woods
mesh_terms: D000293:Adolescent; D000704:Analysis of Variance; D016009:Chi-Square Distribution; D005260:Female; D006760:Hospitalization / Q000706:statistics & numerical data; D006801:Humans; D007902:Length of Stay; D000292:Pelvic Inflammatory Disease / Q000175:diagnosis / Q000628:therapy*; D017410:Practice Guidelines as Topic; D011379:Prognosis; D012042:Registries; D012680:Sensitivity and Specificity; D012720:Severity of Illness Index; D018709:Statistics, Nonparametric; D016896:Treatment Outcome