@article{lofvendahl_validity_2014,
	title = {Validity of diagnostic codes and prevalence of physician-diagnosed psoriasis and  psoriatic arthritis in southern {Sweden} - {A} population-based register study.},
	volume = {9},
	issn = {1932-6203 1932-6203},
	url = {http://dx.doi.org/10.1371%2Fjournal.pone.0098024},
	doi = {10.1371/journal.pone.0098024},
	abstract = {OBJECTIVE: To validate diagnostic codes for psoriasis and psoriatic arthritis (PsA) and estimate physician-diagnosed prevalence of psoriasis and PsA in the Skane region, Sweden. METHODS: In the Skane Healthcare Register (SHR), all healthcare consultations are continuously collected for all inhabitants in the Skane region (population 1.2 million). During 2005-2010 we identified individuals with {\textgreater}/=1 physician-consultations consistent with psoriasis (ICD-10). Within this group we also identified those diagnosed with PsA. We performed a validation by reviewing medical records in 100 randomly selected cases for psoriasis and psoriasis with PsA, respectively. Further, we estimated the pre- and post-validation point prevalence by December 31, 2010. RESULTS: We identified 16  171 individuals (psoriasis alone: n = 13 185, psoriasis with PsA n = 2 986). The  proportion of ICD-10 codes that could be confirmed by review of medical records was 81\% for psoriasis and 63\% for psoriasis with PsA with highest percentage of confirmed codes for cases diagnosed {\textgreater}/=2 occasions in specialized care. For 19\% and 29\% of the cases respectively it was not possible to determine diagnosis due  to insufficient information. Thus, the positive predicted value (PPV) of one},
	language = {eng},
	number = {5},
	journal = {PloS one},
	author = {Lofvendahl, Sofia and Theander, Elke and Svensson, Ake and Carlsson, Katarina Steen and Englund, Martin and Petersson, Ingemar F.},
	year = {2014},
	pmid = {24875275},
	pmcid = {PMC4038520},
	keywords = {*International Classification of Diseases, Adult, Arthritis, Psoriatic/*diagnosis/*epidemiology, Female, Humans, Male, Middle Aged, Physicians, Population Surveillance, Prevalence, Psoriasis/*diagnosis/*epidemiology, Registries, Reproducibility of Results, Sweden/epidemiology},
	pages = {e98024},
}

{"_id":"njnByncmAvEWz8fC9","bibbaseid":"lofvendahl-theander-svensson-carlsson-englund-petersson-validityofdiagnosticcodesandprevalenceofphysiciandiagnosedpsoriasisandpsoriaticarthritisinsouthernswedenapopulationbasedregisterstudy-2014","author_short":["Lofvendahl, S.","Theander, E.","Svensson, A.","Carlsson, K. S.","Englund, M.","Petersson, I. F."],"bibdata":{"bibtype":"article","type":"article","title":"Validity of diagnostic codes and prevalence of physician-diagnosed psoriasis and psoriatic arthritis in southern Sweden - A population-based register study.","volume":"9","issn":"1932-6203 1932-6203","url":"http://dx.doi.org/10.1371%2Fjournal.pone.0098024","doi":"10.1371/journal.pone.0098024","abstract":"OBJECTIVE: To validate diagnostic codes for psoriasis and psoriatic arthritis (PsA) and estimate physician-diagnosed prevalence of psoriasis and PsA in the Skane region, Sweden. METHODS: In the Skane Healthcare Register (SHR), all healthcare consultations are continuously collected for all inhabitants in the Skane region (population 1.2 million). During 2005-2010 we identified individuals with \\textgreater/=1 physician-consultations consistent with psoriasis (ICD-10). Within this group we also identified those diagnosed with PsA. We performed a validation by reviewing medical records in 100 randomly selected cases for psoriasis and psoriasis with PsA, respectively. Further, we estimated the pre- and post-validation point prevalence by December 31, 2010. RESULTS: We identified 16 171 individuals (psoriasis alone: n = 13 185, psoriasis with PsA n = 2 986). The proportion of ICD-10 codes that could be confirmed by review of medical records was 81% for psoriasis and 63% for psoriasis with PsA with highest percentage of confirmed codes for cases diagnosed \\textgreater/=2 occasions in specialized care. For 19% and 29% of the cases respectively it was not possible to determine diagnosis due to insufficient information. Thus, the positive predicted value (PPV) of one","language":"eng","number":"5","journal":"PloS one","author":[{"propositions":[],"lastnames":["Lofvendahl"],"firstnames":["Sofia"],"suffixes":[]},{"propositions":[],"lastnames":["Theander"],"firstnames":["Elke"],"suffixes":[]},{"propositions":[],"lastnames":["Svensson"],"firstnames":["Ake"],"suffixes":[]},{"propositions":[],"lastnames":["Carlsson"],"firstnames":["Katarina","Steen"],"suffixes":[]},{"propositions":[],"lastnames":["Englund"],"firstnames":["Martin"],"suffixes":[]},{"propositions":[],"lastnames":["Petersson"],"firstnames":["Ingemar","F."],"suffixes":[]}],"year":"2014","pmid":"24875275","pmcid":"PMC4038520","keywords":"*International Classification of Diseases, Adult, Arthritis, Psoriatic/*diagnosis/*epidemiology, Female, Humans, Male, Middle Aged, Physicians, Population Surveillance, Prevalence, Psoriasis/*diagnosis/*epidemiology, Registries, Reproducibility of Results, Sweden/epidemiology","pages":"e98024","bibtex":"@article{lofvendahl_validity_2014,\n\ttitle = {Validity of diagnostic codes and prevalence of physician-diagnosed psoriasis and psoriatic arthritis in southern {Sweden} - {A} population-based register study.},\n\tvolume = {9},\n\tissn = {1932-6203 1932-6203},\n\turl = {http://dx.doi.org/10.1371%2Fjournal.pone.0098024},\n\tdoi = {10.1371/journal.pone.0098024},\n\tabstract = {OBJECTIVE: To validate diagnostic codes for psoriasis and psoriatic arthritis (PsA) and estimate physician-diagnosed prevalence of psoriasis and PsA in the Skane region, Sweden. METHODS: In the Skane Healthcare Register (SHR), all healthcare consultations are continuously collected for all inhabitants in the Skane region (population 1.2 million). During 2005-2010 we identified individuals with {\\textgreater}/=1 physician-consultations consistent with psoriasis (ICD-10). Within this group we also identified those diagnosed with PsA. We performed a validation by reviewing medical records in 100 randomly selected cases for psoriasis and psoriasis with PsA, respectively. Further, we estimated the pre- and post-validation point prevalence by December 31, 2010. RESULTS: We identified 16 171 individuals (psoriasis alone: n = 13 185, psoriasis with PsA n = 2 986). The proportion of ICD-10 codes that could be confirmed by review of medical records was 81\\% for psoriasis and 63\\% for psoriasis with PsA with highest percentage of confirmed codes for cases diagnosed {\\textgreater}/=2 occasions in specialized care. For 19\\% and 29\\% of the cases respectively it was not possible to determine diagnosis due to insufficient information. Thus, the positive predicted value (PPV) of one},\n\tlanguage = {eng},\n\tnumber = {5},\n\tjournal = {PloS one},\n\tauthor = {Lofvendahl, Sofia and Theander, Elke and Svensson, Ake and Carlsson, Katarina Steen and Englund, Martin and Petersson, Ingemar F.},\n\tyear = {2014},\n\tpmid = {24875275},\n\tpmcid = {PMC4038520},\n\tkeywords = {*International Classification of Diseases, Adult, Arthritis, Psoriatic/*diagnosis/*epidemiology, Female, Humans, Male, Middle Aged, Physicians, Population Surveillance, Prevalence, Psoriasis/*diagnosis/*epidemiology, Registries, Reproducibility of Results, Sweden/epidemiology},\n\tpages = {e98024},\n}\n\n","author_short":["Lofvendahl, S.","Theander, E.","Svensson, A.","Carlsson, K. S.","Englund, M.","Petersson, I. F."],"key":"lofvendahl_validity_2014","id":"lofvendahl_validity_2014","bibbaseid":"lofvendahl-theander-svensson-carlsson-englund-petersson-validityofdiagnosticcodesandprevalenceofphysiciandiagnosedpsoriasisandpsoriaticarthritisinsouthernswedenapopulationbasedregisterstudy-2014","role":"author","urls":{"Paper":"http://dx.doi.org/10.1371%2Fjournal.pone.0098024"},"keyword":["*International Classification of Diseases","Adult","Arthritis","Psoriatic/*diagnosis/*epidemiology","Female","Humans","Male","Middle Aged","Physicians","Population Surveillance","Prevalence","Psoriasis/*diagnosis/*epidemiology","Registries","Reproducibility of Results","Sweden/epidemiology"],"metadata":{"authorlinks":{}}},"bibtype":"article","biburl":"https://api.zotero.org/groups/2575435/items?key=DE7AwkgUPeLruRBgvUzdo0Xc&format=bibtex&limit=1001","dataSources":["5KXdzWDLX3ijeZEW2","5jEuhQhgRx3py8LmG"],"keywords":["*international classification of diseases","adult","arthritis","psoriatic/*diagnosis/*epidemiology","female","humans","male","middle aged","physicians","population surveillance","prevalence","psoriasis/*diagnosis/*epidemiology","registries","reproducibility of results","sweden/epidemiology"],"search_terms":["validity","diagnostic","codes","prevalence","physician","diagnosed","psoriasis","psoriatic","arthritis","southern","sweden","population","based","register","study","lofvendahl","theander","svensson","carlsson","englund","petersson"],"title":"Validity of diagnostic codes and prevalence of physician-diagnosed psoriasis and psoriatic arthritis in southern Sweden - A population-based register study.","year":2014}