Aplastic Anemia Epidemiology: Incidence and Case-control
Primary Purpose
Blood Disease, Anemia, Aplastic
Status
Completed
Phase
Locations
Study Type
Observational
Intervention
Sponsored by
About this trial
This is an observational trial for Blood Disease
Eligibility Criteria
No eligibility criteria
Sites / Locations
Outcomes
Primary Outcome Measures
Secondary Outcome Measures
Full Information
NCT ID
NCT00005682
First Posted
May 25, 2000
Last Updated
February 17, 2016
Sponsor
National Heart, Lung, and Blood Institute (NHLBI)
1. Study Identification
Unique Protocol Identification Number
NCT00005682
Brief Title
Aplastic Anemia Epidemiology: Incidence and Case-control
Study Type
Observational
2. Study Status
Record Verification Date
May 2000
Overall Recruitment Status
Completed
Study Start Date
September 1988 (undefined)
Primary Completion Date
undefined (undefined)
Study Completion Date
August 1994 (Actual)
3. Sponsor/Collaborators
Name of the Sponsor
National Heart, Lung, and Blood Institute (NHLBI)
4. Oversight
5. Study Description
Brief Summary
To conduct incidence and case-control studies of aplastic anemia in metropolitan Bangkok, Thailand
Detailed Description
BACKGROUND:
Aplastic anemia, a form of bone marrow failure, is a disease of largely unknown cause, except for the rare situations involving high doses of radiation. Many agents have been mentioned in case reports to be associated with the development of aplastic anemia and include drugs, chemicals, pesticides, radiation, and viral infection. Of these, chloramphenicol, phenylbutazone, and insecticides are most frequently reported. In the United States and other developed countries the disease prevalence is so low that too few cases occur to make an epidemiological study in a single city logistically feasible. The Bangkok hospitalization rate for aplastic anemia was sufficient to conduct a case-control study. Also, a study conducted in this locale provided information on drugs and chemicals not commonly used in developed countries.
DESIGN NARRATIVE:
All aplastic anemia cases in metropolitan Bangkok were located and verified in the forty hospitals that agreed to participate in the study. Incidence rates were calculated by age group and sex. In the case-control study, interviews were used to obtain comprehensive histories of drug, chemical, pesticide, radiation, viral infections, and other exposures, along with relevant demographic and medical history information in order to examine the association between and test hypotheses regarding suspected hazards and to estimate the risks of developing aplastic anemia. The basic epidemiologic features of aplastic anemia were described by characterizing these patients in terms of standard demographic variables, age, race, sex, and medical history. The degree of association between viral hepatitis and the development of aplastic anemia was estimated.
The study completion date listed in this record was obtained from the "End Date" entered in the Protocol Registration and Results System (PRS) record.
6. Conditions and Keywords
Primary Disease or Condition Being Studied in the Trial, or the Focus of the Study
Blood Disease, Anemia, Aplastic
7. Study Design
10. Eligibility
Sex
Male
Maximum Age & Unit of Time
100 Years
Accepts Healthy Volunteers
No
Eligibility Criteria
No eligibility criteria
Overall Study Officials:
First Name & Middle Initial & Last Name & Degree
Paul Leaverton
First Name & Middle Initial & Last Name & Degree
Samuel Shapiro
12. IPD Sharing Statement
Citations:
PubMed Identifier
7577657
Citation
Issaragrisil S, Kaufman DW, Anderson TE, Chansung K, Thamprasit T, Sirijirachai J, Piankijagum A, Porapakham Y, Vannasaeng S, Leaverton PE, et al. An association of aplastic anaemia in Thailand with low socioeconomic status. Aplastic Anemia Study Group. Br J Haematol. 1995 Sep;91(1):80-4. doi: 10.1111/j.1365-2141.1995.tb05248.x.
Results Reference
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PubMed Identifier
1318006
Citation
Hibbs JR, Issaragrisil S, Young NS. High prevalence of hepatitis C viremia among aplastic anemia patients and controls from Thailand. Am J Trop Med Hyg. 1992 May;46(5):564-70. doi: 10.4269/ajtmh.1992.46.564.
Results Reference
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PubMed Identifier
2029577
Citation
Issaragrisil S, Sriratanasatavorn C, Piankijagum A, Vannasaeng S, Porapakkham Y, Leaverton PE, Kaufman DW, Anderson TE, Shapiro S, Young NS. Incidence of aplastic anemia in Bangkok. The Aplastic Anemia Study Group. Blood. 1991 May 15;77(10):2166-8.
Results Reference
background
PubMed Identifier
9222791
Citation
Kaufman DW, Issaragrisil S, Anderson T, Chansung K, Thamprasit T, Sirijirachai J, Piankijagum A, Porapakkham Y, Vannasaeng S, Leaverton PE, Shapiro S, Young NS. Use of household pesticides and the risk of aplastic anaemia in Thailand. The Aplastic Anemia Study Group. Int J Epidemiol. 1997 Jun;26(3):643-50. doi: 10.1093/ije/26.3.643.
Results Reference
background
PubMed Identifier
9166842
Citation
Issaragrisil S, Kaufman DW, Anderson T, Chansung K, Thamprasit T, Sirijirachai J, Piankijagum A, Porapakkham Y, Vannasaeng S, Leaverton PE, Shapiro S, Young NS. Low drug attributability of aplastic anemia in Thailand. The Aplastic Anemia Study Group. Blood. 1997 Jun 1;89(11):4034-9.
Results Reference
background
PubMed Identifier
9141447
Citation
Issaragrisil S, Kaufman D, Thongput A, Chansung K, Thamprasit T, Piankijagum A, Anderson T, Shapiro S, Leaverton P, Young NS. Association of seropositivity for hepatitis viruses and aplastic anemia in Thailand. Hepatology. 1997 May;25(5):1255-7. doi: 10.1002/hep.510250532.
Results Reference
background
PubMed Identifier
8987238
Citation
Issaragrisil S, Kaufman DW, Anderson T. Incidence and non-drug aetiologies of aplastic anaemia in Thailand. The Thai Aplastic Anaemia Study Group. Eur J Haematol Suppl. 1996;60:31-4. doi: 10.1111/j.1600-0609.1996.tb01642.x.
Results Reference
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Aplastic Anemia Epidemiology: Incidence and Case-control
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