Physical activity before and after breast cancer diagnosis and survival - the Norwegian women and cancer cohort study

Table 2 Hazard ^bratios (HR) and 95 % confidence intervals (CIs) by all-cause mortality^a and breast cancer-specific mortality^b and change in pre- to post-diagnostic PA level among 1,327 women from the Norwegian Women and Cancer study, 1991–2011

Changes in PA level	N deaths	All-cause mortality HR (95 % CI)^c	N deaths	Breast cancer-specific mortality HR (95 % CI)^c
Maintained inactive	29	1.74 (1.00, 3.05)	23	1.66 (0.88, 3.12)
Reduced PA	42	1.76 (1.21, 2.56)	36	2.05 (1.35, 3.10)
Maintained active	102	1.00 (ref)	76	1.00 (ref)
Increased PA	24	1.23 (0.69, 2.18)	20	1.20 (0.63, 2.28)

^aAll causes of death combined
^bBreast cancer as underlying cause of death
^cMultivariable model adjusted for age, tumor stage at diagnosis and time from diagnosis to PA assessment ≤365/>365 days

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