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Table 3 Multivariable Poisson regression of breast cancer cases in Kelantan Cancer Registry (n = 549)

From: Modelling excess mortality among breast cancer patients in the North East Region of Peninsular Malaysia, 2007–2011: a population-based study

Variablesβ coefficient (SE)Adjusted EHR (95% CI)Z statisticP-value
Age at diagnosis
  > 500.001.00  
  ≤ 500.39 (0.15)1.47 (1.11, 1.96)2.660.008
Ethnicity
 Non-Malay0.001.00  
 Malay0.84 (0.29)2.31 (1.31, 4.09)2.870.004
Stages
 Early stage (stage I and II)0.001.00  
 Late stage (stage III and IV)1.75 (0.16)5.75 (4.24, 7.81)11.25< 0.001
Morphology
 Others0.001.00  
 Inf duct CA, NOS−0.84 (0.21)0.43 (0.29, 0.64)−4.09< 0.001
Surgery
 No0.001.00  
 Yes−1.67 (0.24)0.19 (0.12, 0.30)−7.05< 0.001
Morphology x Time
 Inf duct CA, NOS x Interval 2b1.19 (0.54)3.30 (1.15, 9.44)2.230.026
 Inf duct CA, NOS x Interval 3c1.12 (0.69)3.06 (0.79, 11.90)1.620.106
 Inf duct CA, NOS x Interval 4d0.10 (0.49)1.11 (0.43, 2.88)0.210.831
 Inf duct CA, NOS x Interval 5e0.71 (1.53)2.02 (0.10, 40.73)0.460.645
Surgery x Time
 Yes x Interval 2b1.23 (0.38)3.43 (1.63, 7.22)3.240.001
 Yes x Interval 3c1.16 (0.48)3.18 (1.25, 8.07)2.430.015
 Yes x Interval 4d2.13 (0.49)8.44 (3.25, 21.91)4.39< 0.001
 Yes x Interval 5e0.50 (1.18)1.64 (0.16, 16.46)0.420.672
Time interval
 Interval 1a−2.02 (0.34)0.13 (0.07, 0.26)−5.90< 0.001
 Interval 2b−4.01 (0.58)0.02 (0.01, 0.06)−6.95< 0.001
 Interval 3c−4.34 (0.72)0.01 (0.00, 0.05)−6.04< 0.001
 Interval 4d−4.68 (0.55)0.01 (0.00, 0.03)−8.51< 0.001
 Interval 5e−5.29 (1.44)0.01 (0.00, 0.08)−3.68< 0.001
  1. AIC = 419.38, Deviance = 163.03
  2. Interval 1a = 0–1 years
  3. Interval 2b = 1–2 years
  4. Interval 3c = 2–3 years
  5. Interval 4d = 3–6 years
  6. Interval 5e = 6–10 years
  7. EHR excess hazard ratio, Inf duct CA, NOS Infiltrating ductal carcinoma, not otherwise specified