Although it isnt the only app of its kind, many competing apps simply repackage the data that the EPA stations gather, often without adding clarity, new information, or improved usability
see Limitations
Assessment of covariates We used the main biennial follow-up questionnaires to collect and update information on age, ethnicity (assessed once in 1992 in NHS, 1989 in NHS II, 1986 in HPFS), family history of myocardial infarction, body weight, cigarette smoking, physical activity, and multivitamin use
Cavalieri, E
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Regulations with cutoffs between 2000 and 2006 have been adopted by 24 cities and towns across the state, from Needham, Newton, and Somerville, to Amherst and Northampton, whose enforcement will kick in this summer