An unattended finding: associations of agricultural airborne pesticide vapors attaining inhabited areas with respiratory symptoms of 7– 11 years old children in Heves county, Hungary M. J. Varró 1, Z. Virágh 1, Gy. Gombkötõ 2, M. Szeremi 2, P. Rudnai 1 1 Fodor József National Center for Public Health, National Institute of Environmental Health; Budapest, Hungary; 2 National Public Health and Medical Officer Service, Institute of Heves County; Eger, Hungary NCPH NIEH NPHMOS
INTRODUCTION 1. Nat. Inst. Environ. Health Fodor József Nat. Center Publ. Health, (formerly: Nat. Inst. Hyg. , ) Budapest, Hungary Nat. Publ. Health & Med. Officer Service series of highly uniform environmental epidemiologic surveys among 7– 11 y children NCPH NIEH NPHMOS
INTRODUCTION 2. 1995/96 CESAR - international survey - 5 towns, N=3720 - questionnaire - physical examination - spirometry - measures of outdoor air pollutants NCPH NIEH NPHMOS
INTRODUCTION 2. Questionnaire - health endpoints - indoor environmental factors - other influencing factors Main finding - respiratory symptoms & yearly average cc PM NCPH NIEH NPHMOS
INTRODUCTION 3. 1997 12 towns, N=6221 1998 6 towns, N=1768 1999 3 towns, N=1579 2000 6 counties, N=2354 2001 Heves county, N=2540 2002 Budapest 2 distr. +1 suburban, N=567 NCPH NIEH NPHMOS
INTRODUCTION 4. . arised: agricultural airborne pesticide sprays do attain inhabited areas (no report) Highly significant associations with health endpoints NCPH NIEH NPHMOS
OBJECTIVE To evaluate the associations of pesticide sprays with respiratory symptoms - of 7– 11 year old children - in 40 villages of an area of Heves county - in 2001 NCPH NIEH NPHMOS
METHODS 1. Allergic symptoms - house dust - pollen - animal hair, feather - food - medicine - other - diagnosis: by a doctor? NCPH NIEH NPHMOS
METHODS 2. Neurotic symptoms: at least two of - lack of appetite - fatigue - headache - irritability - anxiety NCPH NIEH NPHMOS
METHODS 3. Head mucosal symptoms: at least one of - conjunctivitis - blocked nose - sinusitic complaints - earache NCPH NIEH NPHMOS
METHODS 4. Bronchitic symptoms regular cough - in autumn-winter - mornings - days/nights - daily, >3 months - with sputum NCPH NIEH NPHMOS
METHODS 5. Asthmatic symptoms - in the last 12 months - wheezing - dry cough at night - asthma - ever diagnosed by a doctor NCPH NIEH NPHMOS
METHODS 6. Data entry, - procession - Epi Info 6. 04 d Analysis - STATA 7. 0 - bivariate tabulation - backward logistic models NCPH NIEH NPHMOS
N 0=2437 N=1819 74. 6% % 50 25 0 Reported symptoms 1. 7– 11 years old children, Villages, Heves county, Hungary, 2001 21. 8 20. 3 Allergic symptoms Min. 2 neur. sy. -s N=1718 N=1647 NCPH NIEH NPHMOS
Reported symptoms 2. 7– 11 years old children, Villages, Heves county, Hungary, 2001 % 50 46. 3 25 0 15. 5 14. 1 Head mucosal Bronchitic Asthmatic N=1647 N=1623 N=1471 NCPH NIEH NPHMOS
Agricultural airborne pesticide sprays attaining inhabited areas Villages, Heves county, Hungary, 2001 % 100 75 90. 8 82. 5% of the villages (n=40) 50 25 9. 2 0 No sprays N=1666 Sprays NCPH NIEH NPHMOS
Agricultural airborne pesticide sprays attaining inhabited areas % % 100 75 50 Villages, Heves county, Hungary, 2001 93. 9 OR=2. 48*** (95% CI= 1. 76– 3. 44) 13. 9 25 0 86. 1 Vineyard territories General agricultural N=1013 N=653 No sprays Sprays NCPH NIEH NPHMOS
Agricultural airborne pesticide sprays/ inhabited areas and allergic symptoms 7– 11 years old children, Villages, Heves county, Hungary, 2001 % 75 OR=2. 13*** (95% CI=1. 48– 3. 07) m. OR=2. 23*** (95% CI=1. 48– 3. 37) 50 goodness-of-fit: p=0. 69 34. 9 25 20. 1 0 No sprays Sprays N=1451 N=146 NCPH NIEH NPHMOS
Agricultural airborne pesticide sprays/ inhabited areas and neurotic symptoms 7– 11 years old children, Villages, Heves county, Hungary, 2001 % 75 OR=2. 19*** (95% CI=1. 51– 3. 17) m. OR=2. 33*** (95% CI=1. 55– 3. 51) 50 goodness-of-fit: p=0. 18 33. 3 25 18. 6 0 No sprays Sprays N=1391 N=144 NCPH NIEH NPHMOS
Agricultural airborne pesticide sprays/ inhabited areas and head mucosal sy. -s 7– 11 years old children, Villages, Heves county, Hungary, 2001 % 75 OR=1. 51* (95% CI=1. 08– 2. 14) 50 55. 6 45. 1 25 0 No sprays Sprays N=1391 N=144 NCPH NIEH NPHMOS
Agricultural airborne pesticide sprays/ inhabited areas and bronchitic sy. -s 7– 11 years old children, Villages, Heves county, Hungary, 2001 % 75 OR=1. 93** (95% CI=1. 28– 2. 92) 50 25 0 24. 6 14. 5 No sprays Sprays N=1382 N=138 NCPH NIEH NPHMOS
Agricultural airborne pesticide sprays/ inhabited areas and asthmatic sy. -s 7– 11 years old children, Villages, Heves county, Hungary, 2001 % 75 OR=1. 82** (95% CI=1. 20– 2. 78) 50 25 0 21. 9 13. 3 No sprays Sprays N=1450 N=146 NCPH NIEH NPHMOS
DISCUSSION 1. Whether it is really possible? - to check retrospectively - flight documentations - to check prospectively - biological monitoring NCPH NIEH NPHMOS
DISCUSSION 2. Chance - high p-values! Bias - recall bias? Confounding - not probable NCPH NIEH NPHMOS
SUMMARY 1. - Pesticide sprays do attain inhabited areas - Respiratory symptoms - 7– 11 y children - N=1819 survey questionnaires NCPH NIEH NPHMOS
SUMMARY 2. - allergic and neurotic symptoms - prevalences: 21. 8%, 20. 3% - pesticide sprays attaining inhabited areas: 9% - odds ratios: 2. 13*** (2. 23***), 2. 19*** (2. 33***) NCPH NIEH NPHMOS
SUMMARY 3. - head mucosal, bronchitic, asthmatic sy. -s - prevalences: 46. 3%, 15. 5%, 14. 1% - odds ratios: 1. 51*, 1. 93**, 1. 82* NCPH NIEH NPHMOS
CONCLUSION Specially designed investigations - environmental health impact - pesticide spraying Official measures NCPH NIEH NPHMOS
THANKS HUNGARIAN NEHAP SECRETARY Dr. Anna Páldy „Fodor József” NCPH NIEH DEPT. COMMUNITY HEALTH Annamária Mácsik, Tamás Rudnai, Eszter Szabó, Renáta Szentmihályi, Györgyi Tóth SCHOOLS, MUNICIPALITIES, HEALTH SERVICES directorship of schools, class leaders, maires, youth and district nurses FAMILIES parents, children NCPH NIEH NPHMOS
Thanks for the attention NCPH NIEH NPHMOS
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