Table 2. Analysis of prognostic factors for grade ≥2 stenosis after high dose rate brachytherapy.

Variable	No.	Grade ≥2 actual stenosis rate at 3 years (%)	p-value
Age (yr)			0.480
<65	33	64
≥65	24	57
T stage			0.870
T1	2	50
T2	20	46
≥ T3	35	40
A factor (lower extension to vagina)			0.140
T2a+T3a	6	100
Other	51	58
N stage			0.110
N0	39	53
N1	18	74
Total prescribed dose (EQD2: α/β=3)			0.970
<84 Gy	24	52
≥ 84 Gy	33	66
External beam RT dose (EQD2: α/β=3)			0.660
<30 Gy	48	61
≥ 30 Gy	9	49 (at 2 yr)
Brachytherapy dose (EQD2: α/β=3)			0.550
<63 Gy	33	48
≥ 63 Gy	24	81
Modality			0.180
Intracavitary	42	72
Interstitial	15	39
Chemotherapy			0.450
Received	27	56
Not received	30	61
Pallor reaction at 6 months			0.001
<Grade 2	47	53
≥ Grade 2	10	100

EQD2, the biologically equivalent dose calculated into equivalent 2-Gy fractions; N, node; RT, radiotherapy; T, tumor.