Time period | LTOT n=25 797 | LTMV n=8111 | CPAP n=65 803 | Control group n=145 224 | Main variables | |
Swedish national quality registries | ||||||
National quality registry for diabetes n=33 319 unique patients | 2 Jan 1997–4 Apr 2019 | 3002 | 2160 | 15 101 | 13 056 | Anthropometrics, biochemical analysis including HbA1c, physical activity, smoking and snuff habits, blood pressure, complications to diabetes (retinopathy, albuminuria, foot complications). |
Swedish Rheumatology Quality Registry n=1584 unique patients | 20 Aug 2009–20 Jan 2020 | 99 | 46 | 630 | 809 | Pharmaceuticals, diagnoses, inpatient care, specialised outpatient care, risk factors and follow-up data. |
National quality registry for stroke n=9149 unique patients | 1 Jan 2001–31 Dec 2017 | 1057 | 412 | 2152 | 5528 | Pharmaceuticals, risk factors (atrial fibrillation, diabetes, smoking habits), length of hospitalisation, details about thrombolysis and medical investigation. |
National quality registry for heart failure n=4712 unique patients | 9 Mar 2002–17 May 2019 | 1119 | 457 | 1460 | 1676 | Anthropometrics, pharmaceuticals, smoking habits, aetiology of heart failure, cardiovascular comorbidities, NYHA function class, ultrasonographic findings, cardiac implantable electronic device therapy. |
National quality registry for acute infarction n=23 164 unique patients | 23 Jan 1991–17 Dec 2018 | 4394 | 1263 | 6470 | 11 037 | Anthropometrics, pharmaceuticals, smoking and snuff habits, medical history, biochemical analysis, reperfusion therapy, electrical devices, stress test, echocardiography, CPAP therapy, length of hospitalisation. |
National quality registry for intensive care n=14 700 unique patients | 1 Jan 2008–19 Mar 2019 | 3604 | 2436 | 3776 | 4884 | Level of hospital (primary, secondary or tertiary), duration of hospitalisation, time of discharge, operation (Y/N, elective/acute), discharged alive (Y/N), diagnosis, decision to forego life-sustaining therapy (Y/N), mechanical ventilation (Y/N), cardiovascular, hepatic, gastroenterological, neurological, renal, respiratory, haematological, metabolic, traumatic or other reason for ICU care. |
Swedish governmental registries | ||||||
National Cancer Registry n=38 291 cancer diagnosis | 5 Jan 1987–31 Dec 2017 | 4984 | 1355 | 6904 | 25 048 | Date and ICD number of cancer diagnosis. |
National Cause of Death Registry n=60 763 deaths | 1 Jan 1996–31 Dec 2018 | 23 573 | 4970 | 2786 | 29 434 | Date of death, primary cause of death, contributing cause(s) of death. |
National Patient Registry | ||||||
Inpatient registry n=9 52 348 care events | 1 Jan 1987–31 Dec 2017 | 288 024 | 103 641 | 143 198 | 417 485 | Date of hospitalisation and discharge, hospital code, main diagnosis, secondary diagnosis(is), surgical diagnosis(es). |
Outpatient registry n=3 736 276 visits | 1 Jan 2001–31 Dec 2017 | 388 501 | 264 873 | 1 100 001 | 1 982 901 | Date of visit, hospital code, main diagnosis, secondary diagnosis(es), surgical diagnosis. |
National Prescribed Drugs Registry n=14 519 303 drug prescriptions | 14 March 2005–31 Dec 2018 | 1 727 676 | 911 168 | 4 650 203 | 7 230 256 | Prescription date, expedition date, ATC-code, information about all dispensed prescriptions, cost. |
National Dental Health Registry n=2 869 575 visits | 1 Jul 2008–30 Dec 2018 | 74 468 | 51 812 | 982 615 | 1 760 684 | Date of visit, number of intact and remaining teeth. |
Time period is 5 years prior to inclusion into the Swedevox registry until end of study period.
ATC-code, Anatomical Therapeutic Chemical code; CPAP, continuous positive airway pressure; HbA1c, glycated haemoglobin; ICD, International Classification of Disease; ICU, intensive care unit; LTMV, long-term mechanical ventilation; LTOT, long-term oxygen therapy; NYHA, New York Heart Association.