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<strong>Hvilke</strong> <strong>data</strong> <strong>er</strong> <strong>tilgængelige</strong> i <strong>dag</strong>, <strong>hvor</strong> <strong>go<strong>de</strong></strong><br />

<strong>er</strong> <strong>de</strong> – og <strong>hvor</strong> <strong>er</strong> d<strong>er</strong> mangl<strong>er</strong>?<br />

Søren Paaske Johnsen<br />

Årsmø<strong>de</strong><br />

<strong>Dansk</strong> Selskab for Kvalitet i Sundhedssektoren<br />

15. Januar 2010


• Tilgængelige <strong>data</strong><br />

• Styrk<strong>er</strong> og svaghed<strong>er</strong> ved eksist<strong>er</strong>en<strong>de</strong> <strong>data</strong>kild<strong>er</strong><br />

• Gen<strong>er</strong>elt<br />

• Udvalgte eksempl<strong>er</strong><br />

• Konklusion


Har vi <strong>de</strong> <strong>data</strong> vi skal bruge i sundhedsvæsenet?


Eksempl<strong>er</strong> på <strong>data</strong>kild<strong>er</strong><br />

• NIP<br />

• Landsdækken<strong>de</strong> kliniske kvalitets<strong>data</strong>bas<strong>er</strong><br />

• Den Landsdækken<strong>de</strong> Und<strong>er</strong>søgelse af Patientoplevels<strong>er</strong> (LUP)<br />

• Landspatientregist<strong>er</strong>et/Lokale patientadministrative system<strong>er</strong><br />

• CPR regist<strong>er</strong>et<br />

• Patologiregist<strong>er</strong><br />

• Canc<strong>er</strong>regist<strong>er</strong>et<br />

• Fødselsregist<strong>er</strong>et<br />

• Dødsårsagsregist<strong>er</strong>et<br />

• Sygesikringen<br />

• Lægemid<strong>de</strong>l<strong>data</strong>bas<strong>er</strong><br />

• Laboratorie<strong>data</strong>bas<strong>er</strong><br />

• Mikrobiologiske registr<strong>er</strong>ingssystem<strong>er</strong><br />

• Billeddiagnostiske registr<strong>er</strong>ingssystem<strong>er</strong><br />

• Blodbankssystem<strong>er</strong>


Mulighed<strong>er</strong> for kobling af <strong>data</strong><br />

Canc<strong>er</strong>regist<strong>er</strong>et<br />

Kliniske<br />

kvalitets<strong>data</strong>bas<strong>er</strong><br />

CPR regist<strong>er</strong>et<br />

<br />

Landspatientregist<strong>er</strong>et<br />

Patologiregist<strong>er</strong>et<br />

Dødsårsagsregist<strong>er</strong>et<br />

Fødselsregist<strong>er</strong>et


Datakild<strong>er</strong> i et historisk p<strong>er</strong>spektiv<br />

1645 Kirkebøg<strong>er</strong><br />

1769 Den første folketælling<br />

1856 Første sygdomsregist<strong>er</strong> –Det Norske Lepra Regist<strong>er</strong><br />

1924 Folk<strong>er</strong>egist<strong>er</strong>et<br />

1925 C<strong>er</strong>ebral pares<strong>er</strong>egist<strong>er</strong>et<br />

1937 Tub<strong>er</strong>kulos<strong>er</strong>egist<strong>er</strong>et<br />

1943 Canc<strong>er</strong>regist<strong>er</strong>et<br />

1943 Dødsårsagsregist<strong>er</strong>et<br />

1953 Det Psykiatriske Centralregist<strong>er</strong><br />

1968 CPR regist<strong>er</strong>et<br />

1973 Medicinsk Fødselsregist<strong>er</strong><br />

1977 Landspatientregist<strong>er</strong>et


EP I DEMIO LO GY<br />

For years, any woman who got an abortion had to<br />

accept more than the loss of h<strong>er</strong> fetus: For some<br />

unknown reason, she also faced an elevated risk<br />

for breast canc<strong>er</strong>. At least that was w hat sev<strong>er</strong>al<br />

small case -control studies had suggested before<br />

Mads Melbye, an epi <strong>de</strong>miologist at the Statens<br />

S<strong>er</strong>um Institute in Copenhagen, und<strong>er</strong>took the<br />

largest effort ev<strong>er</strong> to explore the link. He and<br />

his col leagues obtained records on 400,000<br />

women in Den mark's national Abortion<br />

Regist<strong>er</strong>, then checked how many of the same<br />

women w<strong>er</strong>e listed in the Danish Canc<strong>er</strong><br />

Regist<strong>er</strong>. Their foray into the two <strong>data</strong>bases<br />

led to a surprising result: As they reported<br />

in The New England Journal of Medicine in<br />

1997, th<strong>er</strong>e appe ars to be no connection<br />

between abortion and breast canc<strong>er</strong>.<br />

Their success und<strong>er</strong>scores the value of a trove<br />

of <strong>data</strong> the Danish gov<strong>er</strong>nment has ac cumulated<br />

on its citizenry, which today totals about 5<br />

million people. Oth<strong>er</strong> Scandinavian countries<br />

have created pow<strong>er</strong>ful <strong>data</strong>base systems, but<br />

Denmark has earned a preemi nent reputation for<br />

possessing the most com plete and int<strong>er</strong>woven<br />

collection of statistics touching on almost ev<strong>er</strong>y<br />

aspect of life. The Danish gov<strong>er</strong>nment has<br />

compiled nearly 200 <strong>data</strong>bases, sonic be gun in the<br />

1930s, on ev <strong>er</strong>ything from medical records to<br />

socio economic <strong>data</strong> on jobs and salaries.<br />

What makes the <strong>data</strong>bases a phun research tool<br />

is the fact that they can all be linked by a 10 -<br />

.<br />

When an Entire Country<br />

Is a Cohort<br />

Denmark has gath<strong>er</strong>ed more <strong>data</strong> on its citizens than any oth<strong>er</strong> country. Now<br />

scientists are pushing to make this vast array of statistics even more useful<br />

digit p<strong>er</strong>sonal i<strong>de</strong>ntification numb<strong>er</strong>, called<br />

the CPR, that follows each Dane from cradle to<br />

grave. According to Melbye, "our regist<strong>er</strong>s allow<br />

for instant, large cohort studies that are<br />

impossible in most countries.<br />

Beauty in numb<strong>er</strong>s. These Danish twins starred in a vari ety<br />

show at the turn of the 20th century; n ow it's their medical<br />

records, part of a <strong>data</strong>base, that are in <strong>de</strong>mand.<br />

But Melbye and oth<strong>er</strong> scientists think they<br />

can extract even more from this <strong>data</strong> gold<br />

mine. They argue that not enough money is being<br />

spent on maintaining and expanding existing<br />

<strong>data</strong>base s, and they say that red tape is<br />

hamp<strong>er</strong>ing studies that require correlation of<br />

health and <strong>de</strong>mographic <strong>data</strong>. The problem is<br />

that, while they have unfett<strong>er</strong>ed access to more<br />

than 80 medical <strong>data</strong>bases maintained<br />

by the Danish Board of Health and public<br />

hospita ls, their use of 120 <strong>de</strong>mographic<br />

<strong>data</strong>bases ov<strong>er</strong>seen by the agency Statistics<br />

Denmark is tightly restricted. Statistics Den mark<br />

won't allow research<strong>er</strong>s to remove from its<br />

premises <strong>data</strong> co<strong>de</strong>d by CPR, and the pro cedures<br />

for accessing information at all are unwieldy<br />

and expensive.<br />

Statistics D<strong>er</strong>unark officials are reluctant to<br />

release <strong>data</strong> tied to CPRs, citing privacy<br />

conc<strong>er</strong>ns. "The public should have confi <strong>de</strong>nce<br />

that information i<strong>de</strong>ntifying them as individuals<br />

does not resi<strong>de</strong> outsi<strong>de</strong> of this in stitution," s ays<br />

the agency's Otto And<strong>er</strong>sen.<br />

Last month, Danish research minis<br />

t<strong>er</strong> Birte Weiss formed a committee<br />

to break the impasse. Denmark's<br />

<strong>data</strong>bases are "a resource which<br />

can be used more optimally," she<br />

told Science. "This should be a sci<br />

entific flagship."<br />

Working the health <strong>data</strong>bases<br />

can yield pow<strong>er</strong>ful results. For years<br />

the U.S. National Institutes of Health w<br />

has supported a study following z<br />

twins, hoping to tease out the rela<br />

tive contributions of genes and o<br />

lifestyle to aging. Led by Univ<strong>er</strong>sity a<br />

of S outh<strong>er</strong>n Denmark g<strong>er</strong>ontologist<br />

Kaare Christensen, the project has<br />

tapped the Danish Twin Regist<strong>er</strong>, f<br />

which inclu<strong>de</strong>s 110,000 pairs of<br />

twins born since 1870. Aft<strong>er</strong> follow<br />

ing more than 2000 pairs of twins aged 70 or z<br />

old<strong>er</strong>, Christensen's group has so far ti ed to 0 genes<br />

about a quart<strong>er</strong> of the variation in hu man<br />

longevity. "The project is ma<strong>de</strong> possible by the<br />

unmatched age and completeness of the Danish<br />

twin Regist<strong>er</strong>," lie says. o<br />

The health <strong>data</strong>bases have proven invalu able<br />

for probing contradictions raised by small<strong>er</strong><br />

studies and following disease pro -


”P<strong>er</strong>haps the best population-based <strong>data</strong> sources are<br />

the extensive <strong>data</strong> linkage networks in the<br />

Scandinavian countries. The availability of such<br />

registries for the virtually entire population is an<br />

invaluable resource for epi<strong>de</strong>miologic investigation”<br />

Michael S. Kram<strong>er</strong>. Clinical Epi<strong>de</strong>miology and<br />

Biostatistics 1988


For<strong>de</strong>le ved registre<br />

♦ Data indsamles all<strong>er</strong>e<strong>de</strong><br />

♦ Vil ofte dække hele målpopulationen<br />

♦ Mulighed for at følge patient<strong>er</strong> ov<strong>er</strong> lang tid<br />

♦ Lavt ressourceforbrug


Svaghed<strong>er</strong> ved registre<br />

♦ Vigtige <strong>data</strong> <strong>er</strong> ikke nødvendigvis <strong>tilgængelige</strong>, f.eks. livsstilsfaktor<strong>er</strong><br />

og funktionsscores.<br />

♦ Potentielt problem<strong>er</strong> vedr. <strong>data</strong>kvalitet


”Assumptions are the moth<strong>er</strong> of all<br />

fuck-ups”<br />

Und<strong>er</strong> Siege 2 (Kapring i høj fart)


Hvordan bedømm<strong>er</strong> vi værdien af en <strong>data</strong>kil<strong>de</strong>?<br />

• Komplethed af patientregistr<strong>er</strong>ing<br />

• Komplethed og validitet af variabelregistr<strong>er</strong>ing<br />

• Tilfældig variation<br />

• Systematiske fejl<br />

• Tilgængelighed<br />

• Juridisk<br />

• Teknisk<br />

• Administrativt


Eksempel: Registr<strong>er</strong>ing af medicinske komplikation<strong>er</strong><br />

hos patient<strong>er</strong> indlagt med apopleksi<br />

Ref: Ingeman et al., Clin Epi<strong>de</strong>miol 2010, in press


Eksempel: Hvor mange KOL-indlæggels<strong>er</strong> gemm<strong>er</strong> sig blandt<br />

patient<strong>er</strong> kun ko<strong>de</strong>t med lungebetæn<strong>de</strong>lse ell<strong>er</strong> respirations-svigt?<br />

• 18.657 indlæggelsesforløb i Danmark 1/1-30/9 2008 med<br />

diagnoseko<strong>de</strong> lungebetæn<strong>de</strong>lse ell<strong>er</strong> respirations-svigt, men u<strong>de</strong>n<br />

diagnoseko<strong>de</strong> KOL<br />

• Journalgennemgang af 1.543 af disse forløb i NIP-KOL-regi<br />

• Resultat: I 19% af forløbene hav<strong>de</strong> patienten KOL, u<strong>de</strong>n at diagnosen<br />

var registr<strong>er</strong>et<br />

• Konklusion: bety<strong>de</strong>lig und<strong>er</strong>registr<strong>er</strong>ing af akutte KOL indlæggels<strong>er</strong> i<br />

Danmark<br />

Ref<strong>er</strong>ence: NIP KOL National auditrapport 2009 (www.sundhed.dk)


Hvad betyd<strong>er</strong> forskellige DRG takst<strong>er</strong> for forskellig kodning<br />

af samme tilstand? Erfaring fra NIP KOL: meget…<br />

Diagnoseko<strong>de</strong> Tekst DRG takst 2009 i kr.<br />

J44.0 Kronisk obstruktiv<br />

lungesygdom m<br />

akut nedre<br />

luftvejsinfektion<br />

(0-59 år)<br />

J18.9 Lungebetæn<strong>de</strong>lse<br />

u<strong>de</strong>n specifikation<br />

J22.9 Akut nedre<br />

luftsvejsinfektion<br />

u<strong>de</strong>n specifikation<br />

16.395 kr.<br />

22.063 kr.<br />

40.189 kr.


Positiv prædiktiv værdi af udvalgte diagnos<strong>er</strong> i<br />

Landspatientregist<strong>er</strong>et<br />

Anafylactic shock<br />

Crohn's disease<br />

Diabetes<br />

Ulc<strong>er</strong>ative colitis<br />

Myocardial infarction<br />

H<strong>er</strong>niated lumbal disc<br />

Meningococcal disease<br />

Liv<strong>er</strong> cirrhosis<br />

Canc<strong>er</strong> diagnoses<br />

Essential hyp<strong>er</strong>tension<br />

Rheumatic fev<strong>er</strong><br />

Conn's syndrome<br />

Traumatic hip luxation<br />

Ut<strong>er</strong>ine rupture<br />

0 10 20 30 40 50 60 70 80 90 100


Hvordan komm<strong>er</strong> vi vid<strong>er</strong>e?


Eksempel: Kombin<strong>er</strong>et <strong>data</strong>indsamling<br />

• Etabl<strong>er</strong>et af Århus Amt/Region Midtjylland<br />

• Fø<strong>de</strong>system til NIP-diabetes<br />

• I drift fra maj 2006 på diabetesambulatori<strong>er</strong><br />

• Udnytt<strong>er</strong> fuldt ud <strong>data</strong> fra sygehusenes laboratoriesystem<strong>er</strong> samt<br />

sygesikringens ordinations- og y<strong>de</strong>lses<strong>data</strong>base.<br />

• Udfyld<strong>er</strong> en stor <strong>de</strong>l af NIP skemaet automatisk.<br />

• Rest<strong>er</strong>en<strong>de</strong> <strong>data</strong> indtastes af læge/sygeplej<strong>er</strong>ske (inkl. rygevan<strong>er</strong>, BMI<br />

og blodtryk).<br />

• Oprin<strong>de</strong>lig blev <strong>de</strong>t estim<strong>er</strong>et, at <strong>de</strong>t manuelt ville tage ca. 8 minutt<strong>er</strong><br />

at udfyl<strong>de</strong> skemaet, plus ti<strong>de</strong>n til at fremsøge relevante <strong>data</strong> i<br />

patientens journal. Med <strong>de</strong>n nye løsning brug<strong>er</strong> ambulatori<strong>er</strong>ne typisk<br />

1-2 minutt<strong>er</strong> på skemaet, ligesom ti<strong>de</strong>n til <strong>data</strong>søgning i patientens<br />

journal <strong>er</strong> reduc<strong>er</strong>et væsentligt.


Eksempel: Registr<strong>er</strong>ing af NMSC i Speciallægepraksis<br />

Sundhedsstyrelsens<br />

elektroniske indb<strong>er</strong>etningssystem


Eksempel: Registr<strong>er</strong>ing af NMSC i Speciallægepraksis<br />

Den kliniske <strong>data</strong>base for NMSC<br />

Sundhedsstyrelsens<br />

elektroniske indb<strong>er</strong>etningssystem


Eksempel: Registr<strong>er</strong>ing af NMSC i Speciallægepraksis<br />

Den kliniske <strong>data</strong>base for NMSC<br />

Sundhedsstyrelsens<br />

elektroniske indb<strong>er</strong>etningssystem


Konklusion<br />

• Det danske sundhedsvæsen <strong>er</strong> begunstiget af adgang til<br />

omfatten<strong>de</strong> mængd<strong>er</strong> af værdiful<strong>de</strong> <strong>data</strong>.<br />

• Bety<strong>de</strong>ligt potentiale for at anven<strong>de</strong> disse <strong>data</strong> til<br />

kvalitetsudvikling og forskning.<br />

• Kritisk og kreativ tilgang til <strong>data</strong> nødvendig for at sikre et<br />

validt og brugbart informationsgrundlag.

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