While mapped data provide a common ground for discussions between the public, the media, regulatory agencies, and public health researchers, the analysis of spatially referenced data has experienced a phenomenal growth over the last two decades, thanks in part to the development of geographical information systems (GISs). This is the first thorough overview to integrate spatial statistics with data management and the display capabilities of GIS. It describes methods for assessing the likelihood of observed patterns and quantifying the link between exposures and outcomes in spatially correlated data. This introductory text is designed to serve as both an introduction for the novice and a reference for practitioners in the field Requires only minimal background in public health and only some knowledge of statistics through multiple regression Touches upon some advanced topics, such as random effects, hierarchical models and spatial point processes, but does not require prior exposure Includes lavish use of figures/illustrations throughout the volume as well as analyses of several data sets (in the form of "data breaks") Exercises based on data analyses reinforce concepts
The storied Iron Brigade carved out a unique reputation during the Civil War. Its men fought on many hard fields, but they performed their most legendary exploits just outside a small Pennsylvania town called Gettysburg on the first day of July in 1863. There were many heroic actions that morning and afternoon, but the fight along an unfinished deep scar in the ground north of the Chambersburg Pike was one never forgotten, and is the subject of Lance J. HerdegenÕs and William J. K. BeaudotÕs award-winning (and long out of print) In the Bloody Railroad Cut at Gettysburg: The 6th Wisconsin of the Iron Brigade and its Famous Charge. The railroad cut fighting was led mainly by the ÒCalico BoysÓ of the 6th Wisconsin Volunteers. Detached from the balance of the Iron Brigade, the Badgers of the 6th charged nearly 200 yards to meet a Confederate brigade that had swung into what looked like an ideal defensive position along an unfinished railroad cut northwest of town. The fighting was close, brutal, personal, and bloodyÑand it played a key role in the final Union victory. The Wisconsin men always remembered that moment when they stood under Òa galling fireÓ in an open field just north of the pike. Using hundreds of firsthand accounts, many previously unpublished, Herdegen and Beaudot carry their readers into the very thick of the fighting. The air seemed Òfull of bullets,Ó one private recalled, the men around him dropping Òat a fearful rate.Ó Pvt. Amos Lefler was on his hands and knees spitting blood and teeth with Capt. Johnny Ticknor of Company K down and dying just a handful of yards away. Pvt. James P. Sullivan felt defenseless, unable as he was to get his rifle-musket to fire because of bad percussion caps. Rebel buckshot, meanwhile, smashed the canteen and slashed the hip of Sgt. George Fairfield. Behind the Wisconsin men, Lt. Col. Rufus Dawes watched a ÒfearfulÓ and ÒdestructiveÓ Confederate fire crashing with Òan unbroken roar before us. Men were being shot by twenties and thirties.Ó While frantically loading and shooting, the Badgers leaned into the storm of bullets coming from the cut 175 yards away. The Westerners pushed slowly into the field andÑat that very instant when victory or defeat teetered undecidedÑthe ÒJayhawkersÓ in the Prairie du Chien Company began shouting ÒCharge! Charge! Charge!Ó And so they did. Young Dawes lifted his sword and shouted ÒForward! Forward Charge! Align on the Colors!Ó It was at that moment, remembered Cpl. Frank Wallar, a farmer-turned-soldier who would soon make his name known to history by capturing the flag of the 2nd Mississippi, Òthere was a general rush and yells enough to almost awaken the dead.Ó Out of print for nearly two decades, this facsimile reprint and its new Introduction share with yet another generation of readers the story of the 6th WisconsinÕs magnificent charge. Indeed it is their story, and how they remembered it. And it is one you will never forget.
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