Hobo Day baton twirlers, 1956

Baton twirlers on Main Avenue, Brookings, South Dakota, during the 1954 Hobo Day paradehttps://openprairie.sdstate.edu/dc_hobo-day/1166/thumbnail.jp

Hobo Day Beard Contest contestants, 1946

Gladys Micheel runs fingers through Charles Micheel\u27s beard while Mr. and Mrs. Warren Bastian (in top hat) stand to the right holding their babyhttps://openprairie.sdstate.edu/dc_hobo-day/1120/thumbnail.jp

Engineering parade float, 1939

Blimp mounted on a flatbed truck, sign on the side reads, \u27Engineers are on the way up\u27https://openprairie.sdstate.edu/dc_hobo-day/1053/thumbnail.jp

Hobo Day football game, 1969

Coach talking with a player during the 1969 Hobo Day football gamehttps://openprairie.sdstate.edu/dc_hobo-day/1273/thumbnail.jp

Cooperative Extension Service Parade float, 1939

Parade float decorated with the words, \u27Extension Service 25 Years State College\u27 and two people riding on ithttps://openprairie.sdstate.edu/dc_hobo-day/1051/thumbnail.jp

Giant Hobo and a woman on a parade float, 1939

Parade float with a giant hobo on it and a woman is holding his hand, sign on the side reads, \u27Dont Lag Behind Too Far Little Sister\u27https://openprairie.sdstate.edu/dc_hobo-day/1154/thumbnail.jp

Hobo Day Beard and Pigtail Contest Winners, 1956

Beard and Pigtail contest winners for 1956: Most Ticklish Beard, Blondest Beard, Shortest Braided Pigtails, Longest Pigtails, Most Pigtails, Cutest Pigtails, Most Handsome Beard, Decorative Pigtails, Longest Beard, Blackest Beard, Reddest Beard, Ugliest Beard, Best Try Beardhttps://openprairie.sdstate.edu/dc_hobo-day/1133/thumbnail.jp

Positive predictive value of peptic ulcer diagnosis codes in the Danish National Patient Registry

Søren Viborg,1 Kirstine Kobberøe Søgaard,1 Peter Jepsen1,2 1Department of Clinical Epidemiology, 2Department of Hepatology and Gastroenterology, Aarhus University Hospital, Aarhus, Denmark Background: Diagnoses of peptic ulcer are registered in the Danish National Patient Registry (DNPR) for administrative as well as research purposes, but it is unknown whether the coding validity depends on the location of the ulcer.Objective: To validate the International Classification of Diseases, 10th revision diagnosis codes of peptic ulcer in the DNPR by estimating positive predictive values (PPVs) for gastric and duodenal ulcer diagnoses.Methods: We identified all patients registered with a hospital discharge diagnosis of peptic ulcer from Aarhus University Hospital, Denmark, in 1995–2006. Among them, we randomly selected 200 who had an outpatient gastroscopy at the time of ulcer diagnosis. We reviewed the findings from these gastroscopies to confirm the presence of peptic ulcer and its location. We calculated PPVs and corresponding 95% confidence intervals (CIs) of gastric and duodenal ulcer diagnoses, using descriptions from the gastroscopic examinations as standard reference. Results: In total, 182 records (91%) were available for review. The overall PPV of peptic ulcer diagnoses in DNPR was 95.6% (95% CI 91.5–98.1), with PPVs of 90.3% (95% CI 82.4–95.5) for gastric ulcer diagnoses, and 94.4% (95% CI 87.4–98.2) for duodenal ulcer diagnoses. PPVs were constant over time.Conclusion: The PPV of uncomplicated peptic ulcer diagnoses in the DNPR is high, and the location of the ulcers is registered correctly in most cases, indicating that the diagnoses are useful for research purposes. Keywords: peptic ulcer, validation, positive predictive value, diagnosis, Danish National Patient Registr

Electrical Engineers Parade float, 1939

Car pulling a small, low-to-the ground floats, \u27Electrical Engineers\u27 is on a sign above the car roof, and \u27Danger 50,000 Jolts\u27 is on a sign on the hoodhttps://openprairie.sdstate.edu/dc_hobo-day/1052/thumbnail.jp