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Pre-diagnostic body mass index and weight change in relation to colorectal cancer survival among incident cases from a population-based cohort study

Permanent lenke
https://hdl.handle.net/10037/10387
DOI
https://doi.org/10.1186/s12885-016-2445-4
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Åpne
article.pdf (434.9Kb)
(PDF)
Dato
2016-07-07
Type
Journal article
Tidsskriftartikkel
Peer reviewed

Forfatter
Laake, Ida; Larsen, Inger Kristin; Selmer, Randi; Thune, Inger; Veierød, Marit Bragelien
Sammendrag
Background:
Whether excess body weight influences colorectal cancer (CRC) survival is unclear. We studied pre-diagnostic body mass index (BMI) and weight change in relation to CRC-specific mortality among incident CRC cases within a large, Norwegian cohort.
Methods:
Participants’ weight was measured at health examinations up to three times between 1974 and 1988. CRC cases were identified through linkage with the Norwegian Cancer Registry. In total, 1336 men and 1180 women with a weight measurement >3 years prior to diagnosis were included in analyses. Hazard ratios (HRs) and confidence intervals (CIs) were estimated with Cox regression.
Results:
During a mean follow-up of 5.8 years, 507 men and 432 women died from CRC. Obesity (BMI ≥30 kg/m2) was associated with higher CRC-specific mortality than normal weight (BMI 18.5–25 kg/m2) in men with proximal colon cancer, HR = 1.85 (95 % CI 1.08–3.16) and in women with rectal cancer, HR = 1.93 (95 % CI 1.13–3.30). Weight gain was associated with higher CRC-specific mortality in women with CRC, colon cancer, and distal colon cancer, HRs per 5 kg weight gain were 1.18 (95 % CI 1.01–1.37), 1.22 (95 % CI 1.02–1.45), and 1.40 (95 % CI 1.01–1.95), respectively. Weight gain was not significantly associated with survival in men.
Conclusions:
Maintaining a healthy weight may benefit CRC survival, at least in women.
Keywords:
Colorectal cancer Survival Body mass index Weight change Cohort study
Beskrivelse
Source: doi: 10.1186/s12885-016-2445-4
Forlag
BioMed Central
Sitering
Laake I et al. Pre-diagnostic body mass index and weight change in relation to colorectal cancer survival among incident cases from a population-based cohort study. BMC Cancer. 2016;16
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