Table 1.

Demographics and clinicopathological characteristics of 48 patients

Characteristics	na	%
Age
Median, range (years)	58, 43–82
Gender
Male	37	77.1
female	11	22.9
Smoking history (pack years)b
Never	15	31.3
1–20	6	12.5
21–40	10	20.8
41–60	9	18.8
>60	8	16.7
Karnofsky performance status
60	2	4.2
70	7	14.6
80	23	47.9
90	16	33.9
Disease stage
IIIa	20	41.7
IIIb	28	58.3
Tumour histology
Squamous cell carcinoma	31	64.6
Adenocarcinoma	10	20.8
Not specified	7	14.6
Tumour location
Left upper lobe	12	25.0
Left lower lobe	7	14.6
Right upper lobe	14	29.2
Right mid-lobe	5	10.4
Right lower lobe	10	20.8
Tumour location
Peripheral	16	33.3
Central	32	66.7
Treatment choice
RT alone	3	6.3
RT + adjuvant chemotherapy	1	2.1
Concurrent chemoradiotherapy alone	0	0.0
Concurrent + adjuvant chemotherapy	5	10.4
Induction chemotherapy + RT	9	18.8
Induction + RT + adjuvant chemotherapy	11	22.9
Induction + concurrent chemotherapy	12	25.0
Induction + concurrent + adjuvant chemotherapy	7	14.6
Target volume median, range (cm3)
PTV	438.3, 204.9–1116.2
PTVG	131.0, 10.9–509.2
Treatment dose median, range (Gy)
PTV	51.58, 45.0–63.0
PTVG	63.0, 55.0–74.2
PTVG dose (Gy)
55–59	8	16.7
60–64	20	41.7
65–69	16	33.3
≥70	4	8.3

PTV, planning target volume; PTV_G, gross tumour volume; RT, radiation therapy.

^an denotes the number of patients, unless otherwise indicated.

^b1 pack year = smoking 20 cigarettes per day for 1 year.