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. Author manuscript; available in PMC: 2015 Nov 16.
Published in final edited form as: J Pediatr Surg. 2008 May;43(5):831–836. doi: 10.1016/j.jpedsurg.2007.12.021

Table 1.

Baseline demographic, disease, and treatment characteristic summary: percentages are calculated based on the number of nonmissing values

Variable Nonmetastatic patients (n = 100) Metastatic patients (n = 30) All chest wall patients (n = 130)
Study
 IRS-I 20 (20%) 4 (13%) 24 (18%)
 IRS-II 28 (28%) 14 (47%) 42 (32%)
 IRS-III 27 (27%) 5 (17%) 32 (25%)
 IRS-IV 19 (19%) 2 (7%) 21 (16%)
 IRS-IVP 6 (6%) 5 (17%) 11 (8%)
XRT given
 Yes 67 (74%) 23 (77%) 90 (74%)
Sex
 Female 41 (41%) 21 (70%) 62 (48%)
Histologic finding
 Alveolar 34 (34%) 14 (47%) 48 (37%)
 Embryonal/spindle cell 27 (27%) 8 (27%) 35 (27%)
 Rhabdo NOS 1 (1%) 1 (1%)
 Undifferentiated 20 (20%) 4 (13%) 24 (18%)
 Sarcoma, not classifiable 8 (8%) 2 (7%) 10 (8%)
 Other 10 (10%) 2 (7%) 12 (9%)
Age (y)
 <1 6 (6%) 2 (7%) 8 (6%)
 1–9 53 (53%) 11 (37%) 64 (49%)
 10+ 41 (41%) 17 (57%) 58 (45%)
Stage
 1
 2 14 (31%) 14 (19%)
 3 30 (67%) 30 (42%)
 4 1 (2%) 27 (100%) 28 (39%)
Group
 I A 19 (19%) 19 (15%)
 I B 4 (4%) 4 (3%)
 II A 30 (30%) 30 (23%)
 II B 3 (3%) 3 (2%)
 III 44 (44%) 44 (34%)
 IV 30 (100%) 30 (23%)
Size
 ≤5 cm 15 (35%) 1 (13%) 16 (31%)
T-Stage
 T-1 23 (52%) 23 (43%)
 T-2 21 (48%) 9 (100%) 30 (57%)
Nodal status
 N-0 33 (72%) 6 (67%) 39 (71%)
 N-1 6 (13%) 3 (33%) 9 (16%)
 N-X 7 (15%) 7 (13%)

XRT, radiation therapy.