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Table 1 Patient characteristics of the study population in the primary analysis

From: Chemotherapy alone versus definitive concurrent chemoradiotherapy for cT4b esophageal squamous cell carcinoma: a population-based study

Ā 

C/T Group (nā€‰=ā€‰56)

dCCRT Group (nā€‰=ā€‰191)

Standardized difference (rounded)a

Number or mean (SD)a

(%)a

Number or mean (SD)a

(%)a

Before PSW

After PSW

Age (year)

56.11 (9.54)

Ā 

55.87 (8.16)

Ā 

0.026

ā‰ˆ 0

Sex

Ā Ā Ā Ā Ā Ā 

Female

1

(2)

10

(5)

0.188

ā‰ˆ 0

Male

55

(98)

181

(95)

Ā Ā 

Residency

Ā Ā Ā Ā Ā Ā 

Non-north

39

(70)

123

(64)

0.112

ā‰ˆ 0

North

17

(30)

68

(36)

Ā Ā 

Drinking

Ā Ā Ā Ā Ā Ā 

No

14

(25)

20

(10)

0.387

ā‰ˆ 0

Yes

42

(75)

171

(90)

Ā Ā 

Smoking

Ā Ā Ā Ā Ā Ā 

No

6

(11)

17

(9)

0.061

ā‰ˆ 0

Yes

50

(89)

174

(91)

Ā Ā 

PET

Ā Ā Ā Ā Ā Ā 

No

41

(73)

67

(35)

0.828

ā‰ˆ 0

Yes

15

(27)

124

(65)

Ā Ā 

Tumor location

Ā Ā Ā Ā Ā Ā 

Non-cervical

51

(91)

163

(85)

0.178

ā‰ˆ 0

Cervical

5

(9)

28

(15)

Ā Ā 

N-stage

Ā Ā Ā Ā Ā Ā 

0

4

(7)

17

(9)

0.065

ā‰ˆ 0

1ā€“3

52

(93)

174

(91)

Ā Ā 

BMI

19.30 (3.16)

Ā 

20.75 (3.69)

Ā 

0.424

ā‰ˆ 0

  1. BMI body mass index, C/T chemotherapy, dCCRT definitive concurrent chemoradiotherapy, PET positron emission tomography, PSW propensity-score weighting, SD standard deviation
  2. aRounded