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Table 2 The results of meta-analysis

From: The comparison between total hip arthroplasty and hemiarthroplasty in patients with femoral neck fractures: a systematic review and meta-analysis based on 25 randomized controlled trials

Variables

N (study)

N (THA)

N (HA)

Pooled data

Heterogeneity

WMD/RR(95%CI)

P

I2(%)

Ph

Hospital and Surgery

 Hospital length

9

418

443

2.360 (0.215, 4.506)

0.031

96.0%

< 0.0001

 Hospital length (deleted Li et al. [25], Liu et al. [27])

7

324

349

0.721 (0.362, 1.080)

< 0.0001

0%

0.428

 Surgery time

15

1292

1341

20.044 (14.257, 25.830)

< 0.0001

95.7%

< 0.0001

 Blood loss

9

1063

1038

69.106 (39.083, 99.129)

< 0.0001

96.4%

< 0.0001

 Blood loss (deleted developing countries’ studies)

4

881

856

76.027 (51.951, 100.104)

< 0.0001

17.6%

0.303

Clinical outcomes

 By follow-up

       

  HHS(< 6 months)

5

208

208

1.641 (− 0.449, 3.731)

0.124

0%

0.784

  HHS (at 1 year)

6

317

333

3.593 (1.278, 5.907)

0.002

12.5%

0.335

  HHS (at 2 years)

5

174

168

3.691 (0.571, 6.812)

0.020

38.8%

0.162

  HHS (3 to 5 years)

5

233

251

6.027 (0.434, 11.621)

0.035

90.1%

< 0.0001

  HHS (at 9 years)

2

57

71

5.848 (− 4.603, 16.299)

0.273

74.1%

0.050

  Pain (HHS subscore)

3

148

148

0.065 (− 0.385, 0.515)

0.777

85.5%

< 0.0001

  Pain (HHS subscore, < 6 months)

2

97

97

− 0.042 (− 0.686, 0.602)

0.897

79.5%

0.027

  Pain (HHS subscore, at 1 year)

3

128

128

0.405(− 0.575, 1.385)

0.418

92.7%

0.000

  Pain (HHS subscore, at 2 years)

2

57

57

− 0.020 (− 0.902, 0.862)

0.964

78.6%

0.031

  EQ-5D(<6 months)

3

183

214

0.031 (− 0.031, 0.093)

0.324

2.1%

0.360

  EQ-5D(at 1 year)

3

181

177

0.033 (− 0.036, 0.102)

0.351

0.0%

0.951

  EQ-5D(at 2 years)

3

173

165

0.107 (0.049, 0.164)

< 0.0001

0.0%

0.525

  Pain (binary)

3

827

783

0.244 (0.050, 1.183)

0.080

91.0%

< 0.0001

Common complications

 Pulmonary embolism

4

187

235

0.597 (0.158, 2.257)

0.447

0%

0.517

 Deep vein thrombosis

8

397

439

1.004 (0.386, 2.614)

0.994

13.3%

0.326

 Pneumonia

7

308

315

0.932 (0.431, 2.014)

0.858

0%

0.733

 Pressure injury

4

183

185

1.233 (0.301, 5.056)

0.771

0%

0.516

 Wound disease

10

1170

1227

0.857 (0.488, 1.505)

0.591

0%

0.933

 Surgical site infection

5

967

974

0.963 (0.422, 2.200)

0.929

17.3%

0.305

 Cardiovascular disease

6

286

335

1.474 (0.672, 3.233)

0.333

0%

0.669

Implant-related complications

 Revision

13

1397

1480

0.736 (0.419, 1.292)

0.286

47.2%

0.030

 Revision (Deleted Ravikumar et al. [40, 41])

12

1308

1389

0.882 (0.513, 1.517)

0.651

30.3%

0.150

 Fracture

7

1065

1094

1.064 (0.707, 1.600)

0.767

0%

0.853

 Dislocation

16

1473

1562

1.897 (1.273, 2.827)

0.002

4%

0.407

 Heterotopic Ossification

3

853

880

1.272 (0.844, 1.918)

0.251

0%

0.647

 Loosening or Subsidence

2

833

860

0.640 (0.170, 2.409)

0.509

25.5%

0.247

 Acetabular Erosion

2

215

238

0.030 (0.004, 0.219)

0.001

0%

0.769

Mortality

 By follow-up

       

  Mortality (in hospital)

8

414

456

1.484 (0.616, 3.579)

0.379

0%

0.434

  Mortality (< 6 months)

2

69

76

0.679 (0.094, 4.892)

0.767

37.5%

0.206

  Mortality (at 1 year)

7

372

394

1.011 (0.684, 1.493)

0.958

0%

0.705

Mortality (at 2 years)

8

1197

1294

1.224(1.055,1.421)

0.008

12.3%

0.334

Mortality(3 to 5 years)

2

249

270

1.138(0.869,1.490)

0.346

12.8%

0.284

Mortality(9 to 13 years)

3

435

473

1.021(0.881,1.183)

0.786

0%

0.489