Table 1.
Variable | Overall (n = 190) | MDM2 positive (n = 88) | MDM2 not performed (n = 102) | p value | |||
---|---|---|---|---|---|---|---|
n | (%) | n | (%) | n | (%) | ||
Age (mean, yrs)∗ | 61.7 ± 13.1 | 62.2 ± 13.7 | 61.4 ± 12.6 | 0.67 | |||
Sex (male) | 100 | 52.6 | 46 | 52.3 | 54 | 52.9 | 0.93 |
BMI (mean)∗ | 28.1 ± 5.2 | 28.4 ± 5.3 | 27.8 ± 5.1 | 0.44 | |||
Margin status | 0.22 | ||||||
Positive | 127 | 66.8 | 63 | 71.6 | 64 | 62.7 | |
Negative | 49 | 25.9 | 16 | 18.2 | 33 | 37.3 | |
Could not be determined | 14 | 7.4 | 9 | 10.2 | 5 | 4.9 | |
Location | 0.98 | ||||||
Upper extremity | 25 | 13.2 | 12 | 13.6 | 13 | 12.7 | |
Lower extremity | 156 | 82.1 | 73 | 83.0 | 83 | 81.4 | |
Superficial torso | 9 | 4.7 | 3 | 3.4 | 6 | 5.9 | |
Size (cm)∗ | 17.7 ± 8.5 | 19.3 ± 7.8 | 16.3 ± 9.0 | 0.02 | |||
CT scans (mean)∗ | 0.9 ± 2.1 | 0.7 ± 2.6 | 1 ± 1.7 | 0.39 | |||
CXRs (mean)∗ | 1.3 ± 2.5 | 1.4 ± 2.3 | 1.3 ± 2.8 | 0.61 | |||
Local recurrences (total) | 36 | 18.9 | 16 | 18.2 | 20 | 19.6 | 0.75 |
Cost (mean, $)∗,^ | 323.58 ± 585.95 | 371.40 ± 689.57 | 281.08 ± 475.01 | 0.25 | |||
Follow-up time (mean, months)∗ | 58.6 ± 33.1 | 47.2 ± 27.7 | 68.4 ± 34.2 | <0.001 |
∗ Continuous variables presented with mean and SD. ^Costs were calculated based on publicly available averages for CT scans of the thorax without contrast ($285) and chest radiographs with 2 views ($60.93) in North Carolina. Bold values represent statistical significance at p < 0.05.