Table 1 Baseline characteristics of the iAE and non-iAE groups
Characteristic | Overall (N = 195) | iAE group (N = 48) | Non-iAE group (N = 147) | P value |
|---|---|---|---|---|
Age, years | 47.6 ± 10.6 | 49.0 ± 9.4 | 47.2 ± 10.9 | 0.300 |
BMI, kg/m2 | 0.549 | |||
<25 | 160 (82.1) | 38 (79.2) | 122 (83.0) | |
≥25 | 35 (17.9) | 10 (20.8) | 25 (17.0) | |
FIGO stage | < 0.001 | |||
IA2 | 24 (12.3) | 1 (2.1) | 23 (15.6) | |
IB1 | 131 (67.2) | 28 (58.3) | 103 (70.1) | |
IB2 | 14 (7.2) | 8 (16.7) | 6 (4.1) | |
IIA1 | 26 (13.3) | 11 (22.9) | 15 (10.2) | |
Histological type | 0.264 | |||
Squamous cell carcinoma | 156 (80.0) | 35 (72.9) | 121 (82.3) | |
Adenocarcinoma | 35 (17.9) | 11 (22.9) | 24 (16.3) | |
Adenosquamous carcinoma | 4 (2.1) | 2 (4.2) | 2 (1.4) | |
Tumor size, mm | < 0.001 | |||
<20 | 148 (75.9) | 27 (56.3) | 121 (82.3) | |
≥20 | 47 (24.1) | 21 (43.8) | 26 (17.7) | |
Depth of stromal invasion | < 0.001 | |||
≤1/2 | 131 (67.2) | 22 (45.8) | 109 (74.1) | |
>1/2 | 64 (32.8) | 26 (54.2) | 38 (25.9) | |
Lymphovascular space invasion | 0.359 | |||
No | 170 (87.2) | 40 (83.3) | 130 (88.4) | |
Yes | 25 (12.8) | 8 (16.7) | 17 (11.6) | |
Lymph node metastasis | 0.469 | |||
No | 183 (93.8) | 44 (91.7) | 139 (94.6) | |
Yes | 12 (6.2) | 4 (8.3) | 8 (5.4) | |
OSATS score | 28.5 ± 1.6 | 27.2 ± 1.5 | 29.0 ± 1.5 | < 0.001 |