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Table 3 Subgroup analysis of the postoperative treatment outcomes

From: Meta-analysis of postoperative efficacy in patients receiving chemoradiotherapy followed by surgery for resectable esophageal carcinoma

Subgroup

Category

Included studies

Sample size

Test for overall effect

   

CRTS

SA

RR (95% CI)

P

Postoperative mortality based on ethnicity

The West

5

377

417

0.83 [0.47, 1.46]

0.52

The East

2

115

128

0.56 [0.42, 0.75]

<0.0001

Postoperative complication based on ethnicity

The West

4

209

231

1.00 [0.87, 1.15]

0.98

The East

5

357

387

1.23 [0.96, 1.56]

0.10

Local recurrence based on ethnicity

The West

4

283

279

0.51 [0.34, 0.76]

0.001

The East

4

201

202

0.52 [0.33, 0.84]

0.008

Postoperative metastasis based on ethnicity

The West

4

283

279

0.93 [0.75, 1.16]

0.53

The East

4

201

202

0.62 [0.44, 0.88]

0.007

Postoperative mortality based on histology

SCC

7

231

247

0.54 [0.42, 0.68]

<0.0001

AC

5

295

313

1.26 [0.76, 2.06]

0.37

  1. SCC: squamous cell carcinoma AC: adenocarcinoma.