Table 1.

Selected characteristics according to categories of percentage weight change in the KPNC population of colorectal cancer patients diagnosed from 2006 to 2011 (N = 2,781)

% Weight change (range 15–21 months after diagnosis)
Large loss (≥10%)Modest loss (5%–9.9%)Stable (−4.9%–4.9%)Modest gain (5%–9.9%)Large gain (≥10%)Overall
N2393091,4604533202,781
Median change(kg)−14.0−6.80.07.014.21.0
Median age at diagnosis (years)636462626263
Sex (%)
 Female62.855.047.351.249.450.4
Race/ethnicity (%)
 White71.865.765.165.161.365.3
 Black7.65.58.05.37.57.2
 Hispanic10.111.010.212.614.711.2
 Asian10.116.516.316.815.615.8
 Other0.41.30.50.20.90.6
BMI at baseline (%), kg/m2
 <2522.229.530.535.147.232.4
 25≤3031.838.836.239.532.536.2
 30≤3522.219.721.017.715.319.7
 ≥3523.812.012.37.75.011.7
BMI at follow up (%), kg/m2
 <2553.145.029.823.617.831.1
 25≤3026.431.736.538.232.234.9
 30≤3511.716.521.522.531.921.5
 ≥358.86.812.215.718.112.5
Tumor stage (%)
 I20.128.232.927.417.828.7
 II28.531.429.937.139.132.1
 III51.540.537.235.543.139.2
Grade of differentiation (%)
 Well7.13.66.88.47.26.8
 Moderate66.980.978.473.776.376.7
 Poor20.111.710.512.112.211.9
 Undifferentiated5.93.94.45.74.44.7
 Missing7.13.66.88.47.26.8
Site of primary cancer (%)
 Proximal43.143.442.149.951.644.7
 Distal17.621.428.426.525.926.1
 Rectal39.335.329.523.622.529.2
Treatment (%)
 Chemotherapy61.749.744.744.852.547.6
 Radiation29.022.714.913.213.416.5