Nurses' Health Study I and Nurses' Health Study II

Contacts:

Study Website: http://www.channing.harvard.edu/nhs

Number of Enrolled Cancer Patients/Survivors:	9,200 invasive breast cancer in NHS and 2,600 in NHS II (as of 2008)
Years of Diagnoses of Enrolled Cancer Patients/Survivors:	1976 and ongoing for NHS, 1989 and ongoing for NHS II
Approximate Years of Follow-up:	Years of follow-up vary and depend upon years of diagnosis
Cancer Sites Represented:	All Sites
Biological Specimens Collected:	(Collected on some) Blood/Blood Fraction Buccal Cells Germline DNA Formalin Fixed Tumor Tissue Urine
Treatment Outcome Measures:	Physician/Medical Record Reported Death Patient-Reported Symptom Assessment Acute Medical Event Late Medical Event Quality of Life (Breast) Cancer Recurrence Death
Co-morbidities at Study Entry:	Diabetes Heart Disease Pulmonary Disease Other
Lifestyle Factors:	Smoking Alcohol Use Diet Physical Activity Body Mass Index Weight Loss/Control
Treatment Data:	(Breast Cancer: Self-Report) Surgery Radiation Chemotherapy Hormonal Therapy
Treatment Data Assessed By:	Chart Abstraction (for a few) Patient Reported Questionnaire
Is the study open to collaboration?	Yes