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Table 2 Patient characteristics before and after the matched-pair analysis

From: Efficacy of perioperative chemotherapy for synovial sarcoma: a retrospective analysis of a Nationwide database in Japan

   Before matching (N = 316) After matching (N = 152)
Chemotherapy (n = 215) No chemotherapy (n = 101) P-value Chemotherapy (n = 76) No chemotherapy (n = 76) P-value
Sex Male/female 108/107 45/56 0.345a 38/38 34/42 0.516a
Age, years < 20/20–40/40–60/> 60
Mean, SD
39/101/54/21
34.7, 16.3
11/24/39/27
47.2, 19.1
< 0.001 b 15/21/26/16
41.3, 18.5
8/23/26/19
45.9, 19.2
0.797b
FNCLCC grade Grade 2/grade 3 4/211 8/93 0.009 2/74 4/72 0.405
Depth Superficial/deep 20/195 25/76 < 0.001a 13/63 14/62 0.882a
Location Trunk/head and neck/upper extremity/lower extremity 71/7/37/100 22/0/19/60 0.035a 17/0/19/40 8/0/17/41 0.927a
Length of tumor, cm < 5/5–10/10–15/> 15
Median, IQR
65/96/46/8
6.8, 3.6
52/33/8/8
5.4, 3.9
< 0.001b 35/29/8/4
6.1, 3.9
36/28/8/4
5.4, 3.5
0.999b
Stage I/II/III 4/94/117 8/63/30 0.07a 2/45/29 1/48/27 0.882a
Subtype Monophasic/biphasic/unclassified 102/63/50 51/26/24 0.799 39/17/20 38/19/19 0.985a
Surgical Margin Wide/marginal/intralesional 185/20/10 83/15/3 0.286 62/12/2 64/9/3 0.719
Adjuvant radiotherapy Yes/no 41/174 15/86 0.360 4/72 3/73 0.699
  1. SD standard deviation, FNCLCC Fédération Nationale des Centres de Lutte Contre le Cancer, IQR interquartile range
  2. aChi-square test, bMann-Whitney U test