Epidemiologic Reviews, 20(1): 71-80. Data collection is the process of gathering and measuring information on variables of interest, in an established systematic fashion that enables one to answer stated research questions, test hypotheses, and evaluate outcomes.pidemiologic Reviews, 20(1): 71-80. Data collection is the process of gathering and measuring information on variables of interest, in an established systematic fashion that enables one to answer stated research questions, test hypotheses, and evaluate outcomes.
It succeeded the First Continental Congress, which met between September 5, 1774 and October 26, 1774, also in Philadelphia. The second Congress managed the colonial war effort, and moved incrementally towards independence, adopting the United States Declaration of Independence on July 4, 1776.
On Monday,  July 8, the Declaration of Independence was proclaimed (read aloud) by Col. John Nixon of the Philadelphia Committee of Safety at the State House in Philadelphia. It was also read again that evening before the militia on the Commons. Throughout the city, bells were rung all day. On that day as well the Declaration was publicly read in Easton, Pennsylvania, and Trenton, New Jersey. It was these first public readings which constituted America's first celebrations of the Fourth of July.