Incidence of Churg-Strauss syndrome in asthma drug users: A population-based perspective

Leslie R. Harrold, Susan E. Andrade, Alan S. Go, A (Sonia) Buist, Mark Eisner, William M. Vollmer, K. Arnold Chan, E. Ann Frazier, Peter F. Weller, Michael E. Wechsler, Robert A. Yood, Kourtney J. Davis, Richard Platt

Research output: Contribution to journalArticle

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Abstract

Objective. To estimate the incidence of Churg-Strauss syndrome (CSS) among a large population of asthma drug users. Methods. A retrospective study was conducted among patients who had been dispensed asthma drugs at 3 managed care organizations. Adults who received ≥ 3 dispensings of an asthma drug during any consecutive 12-month period between January 1, 1995 and June 30, 2000 were identified. Information on patient age, gender, enrollment status, asthma drugs dispensed, and inpatient and outpatient diagnoses and procedures was obtained from automated databases. Chart reviews were performed on persons identified by combinations of diagnostic and billing codes indicative of CSS. A rheumatologist reviewed abstracted information on all subjects; those who met 2 American College of Rheumatology criteria for CSS were reviewed by 2 clinical experts. Each clinical expert independently rated the cases; disagreements were resolved by consensus. Cases classified as having "probable/definite" CSS were included in these analyses. The incidence of CSS was estimated overall and according to patient gender, age, and calendar year. Results. From a population of 184,667 asthma drug users contributing 606,184 person-years of exposure, 21 incident cases of CSS were identified (overall incidence of 34.6 per million person-years; 95% confidence interval 21.4 to 53.0). Incidence rates did not differ by gender and age group. The incidence rates for 1995, 1996, 1997, 1998, 1999, and the first 6 months of 2000 were 0, 22, 52, 75, 14, and 14 per million person-years respectively. Conclusions. Results from this population-based study suggest a somewhat lower incidence of CSS in asthma drug users than previously reported and provides important information as to the risk of developing CSS from a population-based perspective.

Original languageEnglish (US)
Pages (from-to)1076-1080
Number of pages5
JournalJournal of Rheumatology
Volume32
Issue number6
StatePublished - Jun 2005

Fingerprint

Churg-Strauss Syndrome
Drug Users
Asthma
Incidence
Population
Pharmaceutical Preparations
Managed Care Programs
Inpatients
Outpatients
Retrospective Studies
Age Groups
Organizations
Databases
Confidence Intervals

Keywords

  • Administrative data
  • Automated data
  • Churg-Strauss syndrome
  • Incidence

ASJC Scopus subject areas

  • Rheumatology
  • Immunology

Cite this

Harrold, L. R., Andrade, S. E., Go, A. S., Buist, A. S., Eisner, M., Vollmer, W. M., ... Platt, R. (2005). Incidence of Churg-Strauss syndrome in asthma drug users: A population-based perspective. Journal of Rheumatology, 32(6), 1076-1080.

Incidence of Churg-Strauss syndrome in asthma drug users : A population-based perspective. / Harrold, Leslie R.; Andrade, Susan E.; Go, Alan S.; Buist, A (Sonia); Eisner, Mark; Vollmer, William M.; Chan, K. Arnold; Frazier, E. Ann; Weller, Peter F.; Wechsler, Michael E.; Yood, Robert A.; Davis, Kourtney J.; Platt, Richard.

In: Journal of Rheumatology, Vol. 32, No. 6, 06.2005, p. 1076-1080.

Research output: Contribution to journalArticle

Harrold, LR, Andrade, SE, Go, AS, Buist, AS, Eisner, M, Vollmer, WM, Chan, KA, Frazier, EA, Weller, PF, Wechsler, ME, Yood, RA, Davis, KJ & Platt, R 2005, 'Incidence of Churg-Strauss syndrome in asthma drug users: A population-based perspective', Journal of Rheumatology, vol. 32, no. 6, pp. 1076-1080.
Harrold LR, Andrade SE, Go AS, Buist AS, Eisner M, Vollmer WM et al. Incidence of Churg-Strauss syndrome in asthma drug users: A population-based perspective. Journal of Rheumatology. 2005 Jun;32(6):1076-1080.
Harrold, Leslie R. ; Andrade, Susan E. ; Go, Alan S. ; Buist, A (Sonia) ; Eisner, Mark ; Vollmer, William M. ; Chan, K. Arnold ; Frazier, E. Ann ; Weller, Peter F. ; Wechsler, Michael E. ; Yood, Robert A. ; Davis, Kourtney J. ; Platt, Richard. / Incidence of Churg-Strauss syndrome in asthma drug users : A population-based perspective. In: Journal of Rheumatology. 2005 ; Vol. 32, No. 6. pp. 1076-1080.
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abstract = "Objective. To estimate the incidence of Churg-Strauss syndrome (CSS) among a large population of asthma drug users. Methods. A retrospective study was conducted among patients who had been dispensed asthma drugs at 3 managed care organizations. Adults who received ≥ 3 dispensings of an asthma drug during any consecutive 12-month period between January 1, 1995 and June 30, 2000 were identified. Information on patient age, gender, enrollment status, asthma drugs dispensed, and inpatient and outpatient diagnoses and procedures was obtained from automated databases. Chart reviews were performed on persons identified by combinations of diagnostic and billing codes indicative of CSS. A rheumatologist reviewed abstracted information on all subjects; those who met 2 American College of Rheumatology criteria for CSS were reviewed by 2 clinical experts. Each clinical expert independently rated the cases; disagreements were resolved by consensus. Cases classified as having {"}probable/definite{"} CSS were included in these analyses. The incidence of CSS was estimated overall and according to patient gender, age, and calendar year. Results. From a population of 184,667 asthma drug users contributing 606,184 person-years of exposure, 21 incident cases of CSS were identified (overall incidence of 34.6 per million person-years; 95{\%} confidence interval 21.4 to 53.0). Incidence rates did not differ by gender and age group. The incidence rates for 1995, 1996, 1997, 1998, 1999, and the first 6 months of 2000 were 0, 22, 52, 75, 14, and 14 per million person-years respectively. Conclusions. Results from this population-based study suggest a somewhat lower incidence of CSS in asthma drug users than previously reported and provides important information as to the risk of developing CSS from a population-based perspective.",
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AU - Andrade, Susan E.

AU - Go, Alan S.

AU - Buist, A (Sonia)

AU - Eisner, Mark

AU - Vollmer, William M.

AU - Chan, K. Arnold

AU - Frazier, E. Ann

AU - Weller, Peter F.

AU - Wechsler, Michael E.

AU - Yood, Robert A.

AU - Davis, Kourtney J.

AU - Platt, Richard

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N2 - Objective. To estimate the incidence of Churg-Strauss syndrome (CSS) among a large population of asthma drug users. Methods. A retrospective study was conducted among patients who had been dispensed asthma drugs at 3 managed care organizations. Adults who received ≥ 3 dispensings of an asthma drug during any consecutive 12-month period between January 1, 1995 and June 30, 2000 were identified. Information on patient age, gender, enrollment status, asthma drugs dispensed, and inpatient and outpatient diagnoses and procedures was obtained from automated databases. Chart reviews were performed on persons identified by combinations of diagnostic and billing codes indicative of CSS. A rheumatologist reviewed abstracted information on all subjects; those who met 2 American College of Rheumatology criteria for CSS were reviewed by 2 clinical experts. Each clinical expert independently rated the cases; disagreements were resolved by consensus. Cases classified as having "probable/definite" CSS were included in these analyses. The incidence of CSS was estimated overall and according to patient gender, age, and calendar year. Results. From a population of 184,667 asthma drug users contributing 606,184 person-years of exposure, 21 incident cases of CSS were identified (overall incidence of 34.6 per million person-years; 95% confidence interval 21.4 to 53.0). Incidence rates did not differ by gender and age group. The incidence rates for 1995, 1996, 1997, 1998, 1999, and the first 6 months of 2000 were 0, 22, 52, 75, 14, and 14 per million person-years respectively. Conclusions. Results from this population-based study suggest a somewhat lower incidence of CSS in asthma drug users than previously reported and provides important information as to the risk of developing CSS from a population-based perspective.

AB - Objective. To estimate the incidence of Churg-Strauss syndrome (CSS) among a large population of asthma drug users. Methods. A retrospective study was conducted among patients who had been dispensed asthma drugs at 3 managed care organizations. Adults who received ≥ 3 dispensings of an asthma drug during any consecutive 12-month period between January 1, 1995 and June 30, 2000 were identified. Information on patient age, gender, enrollment status, asthma drugs dispensed, and inpatient and outpatient diagnoses and procedures was obtained from automated databases. Chart reviews were performed on persons identified by combinations of diagnostic and billing codes indicative of CSS. A rheumatologist reviewed abstracted information on all subjects; those who met 2 American College of Rheumatology criteria for CSS were reviewed by 2 clinical experts. Each clinical expert independently rated the cases; disagreements were resolved by consensus. Cases classified as having "probable/definite" CSS were included in these analyses. The incidence of CSS was estimated overall and according to patient gender, age, and calendar year. Results. From a population of 184,667 asthma drug users contributing 606,184 person-years of exposure, 21 incident cases of CSS were identified (overall incidence of 34.6 per million person-years; 95% confidence interval 21.4 to 53.0). Incidence rates did not differ by gender and age group. The incidence rates for 1995, 1996, 1997, 1998, 1999, and the first 6 months of 2000 were 0, 22, 52, 75, 14, and 14 per million person-years respectively. Conclusions. Results from this population-based study suggest a somewhat lower incidence of CSS in asthma drug users than previously reported and provides important information as to the risk of developing CSS from a population-based perspective.

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