Table 1 Characteristics of studies reporting cancer-specific survival for endometrial cancer patients with diabetes compared to without
Author, year and location | Study design | Study cohort source/database | Endometrial cancer study population | Recruitment period | Study size | Diabetes ascertainment | No. of EC-specific deaths | Risk estimate reported | Outcome ascertainment | Follow-up (mean/ median) | NOS score |
|---|---|---|---|---|---|---|---|---|---|---|---|
Bjornsdottir[56] 2020 Sweden | Population-based | Swedish Cancer Registry | NR | 1998–2012 | NR | The Swedish National Diabetes Register | NR | HR | The Total Population Register and Swedish Cause of Death Registry | 6.6 years (median) | 7 |
Brandt[51] 2019 U.S | Single institution-based | Memorial Sloan Kettering Cancer Centre | Stage I | 2006–2016 | 1458 | Medical records | NR | HR | NR | 2.4 years (median) | 6 |
Donkers [57] 2021 U.K | Single institution-based | Royal Cornwall Hospital Trust Truro, Cornwall | High grade EC stages I-IV | 2006–2017 | 176 | Medical records | 70 | HR | Medical records | NR | 8 |
Felix[34] 2015 U.S | Multi institution-based | NRG Oncology/Gynecologic Oncology Group 210 molecular staging trial | Stages I-IV | 2003–2011 | 4109 | Self-reported | 582 | HR | Medical records and cancer registry | 5 years (median) | 6 |
Folsom[18] 2004 U.S | Population-based | Iowa women’s health study and SEER cancer registry | Stages I-IV | 1986–2000 | 415 | Self-reported | 39 | RR | Registry, questionnaires and NDI | 6.4 years (median) | 6 |
Kolehmainen [59] 2020 Finland | Single institution-based | Obstetrics and Gynaecology, Helsinki University Hospital | Stages I-IV | 2007–2012 | 515 | Self-reported | 97 | HR | Medical records and death certificates | 6.75 years (median) | 4 |
Lam[38] 2018 U.S | Population-based | SEER database | Stages I-IV | 2000–2011 | 22,743 a b | Medicare claims | NR | HR | SEER database | NR | 8 |
Lees [53] 2021 U.S | Population-based | Wisconsin Cancer Registry | Stages I-IV | 2006–2016 | 745 | Structured interview | 46 | HR | National death index | 19.9 years (median) | 8 |
Lindemann[17] 2015 Norway | Population-based | Health surveys of North Trondelag (HUNT) | Stages I-IV | NR | 337 | Self-reported | 56 | HR | Cancer registry | 6.7Â years (median) | 5 |
Nagle[16] 2018 Australia | Population-based | Australian National EC Study | Stages I-IV | 2005–2007 | 1359 | Self-reported | 123 | HR | Medical records and NDI | 7.1 years (median) | 6 |
Olson[21] 2012 U.S | Population-based | SEER-Medicare database | Stages I-IV | 2000- 2005 | 958 c | Medicare claims | NR | HR | SEER registries | 3.5Â years (median) | 6 |
Ribeiro [44] 2021 Brazil | Single institution-based | Department of Obstetrics and Gynaecology, University of Campinas, Sao Paulo | Non-endometrioid EC stages I-IV | 2002–2017 | 127 | Medical records | NR | HR | Medical records | 4.5 years (mean) | 5 |
Ruterbusch[19] 2014 U.S | Single institution-based | Henry Ford Health System (HFHS) tumor registry | Stages I-IV | 1990–2005 | 627 | HFHS, medical records and the MDCSS | 109 | HR | HFHS, medical records and the MDCSS | NR | 6 |
Simon [54] 2021 U.S | Population-based | Women’s Health Initiative (WHI) | Stages I-III | 1993–1998 | NR | Self-report and medication use | NR | HR | Medical records, death certificates, relative’s report and NDI | 10 years (median) | 6 |
Sung[20] 2000 U.S. and China | Multi-institution-based | Women & Infants’ Hospital of RI, Cornell University Medical Centre, Shanghai Medical University, and Women’s and Children’s Hospital, University of Southern California | Stages I-IV | 1976 to 1998 | 125 | Medical records | 112 | RR | Medical records and pathology reports | 5.4 years (mean) | 7 |
VanArsdale[15] 2019 U.S | Single institution-based | Montefiore Medical Centre | Stages I-IV | 1999–2016 | 1,732 | Medical records | 393 | HR | Social security death index | 3.4 years (median) | 7 |
Zanders[58] 2013 Netherlands | Population-based | Eindhoven cancer registry | Endometrioid EC stages I-III | 2000- 2008 | 388 | Medical records | NR | HR | Municipal personal records | NR | 8 |