University of Birmingham

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Recruitment


The first baby was entered into the pulseOx study on 3rd February 2008 and we finished recruitment on 23rd January 2009. As of 23rd January 2009, 20,055 participants were entered into the study.


Monthly and Cumulative Recruitment
Feb-08 Mar-08

Apr-08

May-08

Jun-08

Jul-08

Aug-08

Sep-08

Oct-08

Nov-08

Dec-08

Jan-09

Total Monthly Recruitment (n)

662

1797

1802

1890

1853

1940

1886

1852

1781

1671

1753

1168

% of deliveries recruited

69%

75%

78%

79%

79%

79%

76%

77%

74%

72%

72%

68%

Total Cumulative Recruitment

662

2459

4261

6151

8004

9944

11830

13682

15463

17134

18887

20055

Graph showing monthly and overall recruitment


Recruitment by Centre
  1. Birmingham Women's Hospital

Feb-08

Mar-08

Apr-08

May-08

Jun-08

Jul-08

Aug-08

Sep-08

Oct-08

Nov-08

Dec-08

Jan-09

Total Deliveries (≥35 weeks gestation)

493

603

583

584

611

622

571

562

619

571

592

411

Consented and Registered (n)

377

509

471

495

530

527

485

482

537

479

483

333

Consented and Registered (%)

76%

84%

81%

85%

87%

85%

85%

86%

87%

84%

82%

81%

Missed

100

67

42

51

18

18

40

33

21

25

51

33

Declined

12

21

43

29

35

55

35

36

43

46

42

34

Ineligible

4

6

27

9

28

22

11

11

18

21

16

11

Total Cumulative Consented

377

886

1357

1852

2382

2909

3394

3877

4413

4892

5375

5708

Total Cumulative Deliveries

493

1096

1679

2263

2874

3496

4067

4629

5248

5819

6411

6822

Graph showing recruitment at Birmingham Womens Hospital

   2.  City Hospital, Birmingham

Feb-08

Mar-08

Apr-08

May-08

Jun-08

Jul-08

Aug-08

Sep-08

Oct-08

Nov-08

Dec-08

Jan-09
Total Deliveries (≥35 weeks gestation)

152

284

264

286

243

297

305

276

296

285

283

227

Consented and Registered (n)

73

157

192

213

141

198

168

152

106

123

183

139

Consented and Registered (%)

48%

55%

73%

74%

58%

67%

55%

55%

36%

43%

65%

61%

Missed

76

102

39

36

54

40

95

94

176

151

87

83

Declined

3

20

24

33

47

52

37

27

12

11

13

5

Ineligible

0

5

9

4

1

7

5

3

2

0

0

0

Total Cumulative Consented

73

230

422

635

776

974

1142

1294

1400

1523

1706

1845

Total Cumulative Deliveries

152

436

700

986

1229

1526

1831

2107

2403

2688

2971

3198

Graph showing recruitment at City Hospital Birmingham

3.  Birmingham Heartlands Hospital

Feb-08

Mar-08

Apr-08

May-08

Jun-08

Jul-08

Aug-08

Sep-08

Oct-08

Nov-08

Dec-08

Jan-09

Total Deliveries (≥35 weeks gestation)

71

391

354

407

363

403

410

387

396

379

399

289

Consented and Registered (n)

60

320

299

333

296

323

328

306

300

297

302

214

Consented and Registered (%)

85%

82%

84%

82%

82%

80%

80%

79%

76%

78%

76%

74%

Missed

0

4

2

1

3

5

1

1

4

2

5

4

Declined

6

45

31

47

44

50

57

55

65

58

58

46

Ineligible

5

22

22

26

20

25

24

25

27

22

34

25

Total Cumulative Consented

60

380

679

1012

1308

1631

1959

2265

2565

2862

3165

3378

Total Cumulative Deliveries

71

462

816

1223

1586

1989

2399

2786

3182

3561

3960

4249

Graph showing recruitment at Birmingham Heartlands Hospital

4.  New Cross Hospital

Feb-08

Mar-08

Apr-08

May-08

Jun-08

Jul-08

Aug-08

Sep-08

Oct-08

Nov-08

Dec-08

Jan-09

Total Deliveries (≥35 weeks gestation)

57

283

313

302

322

309

297

296

307

287

299

203

Consented and Registered (n)

18

159

218

211

223

257

238

244

245

240

250

157

Consented and Registered (%)

32%

56%

70%

70%

69%

83%

80%

82%

80%

84%

84%

77%

Missed

39

120

66

59

61

23

24

20

40

18

23

25

Declined

0

1

18

24

26

20

19

22

15

19

17

16

Ineligible

0

3

11

8

12

9

16

10

7

10

9

5

Total Cumulative Consented

18

177

395

606

829

1086

1324

1568

1813

2053

2303

2460

Total Cumulative Deliveries

56

339

652

954

1276

1585

1882

2178

2485

2772

3071

3274

Graph showing recruitment at New Cross Hospital

5. University Hospital Coventry and Warwickshire

Feb-08

Mar-08

Apr-08

May-08

Jun-08

Jul-08

Aug-08

Sep-08

Oct-08

Nov-08

Dec-08

Jan-09
Total Deliveries (≥35 weeks gestation)

120

433

431

459

428

448

483

479

433

461

469

333

Consented and Registered (n)

80

330

325

329

345

328

333

335

284

247

242

122

Consented and Registered (%)

67%

76%

75%

72%

81%

73%

69%

70%

66%

54%

52%

37%

Missed

37

75

43

95

57

73

99

106

112

189

207

197

Declined

3

26

45

32

21

37

45

37

35

21

18

13

Ineligible

0

2

18

3

5

10

6

1

2

4

2

1

Total Cumulative Consented

80

410

735

1064

1409

1737

2070

2405

2689

2936

3178

3300

Total Cumulative Deliveries

120

553

984

1443

1871

2319

2802

3281

3714

4175

4644

4977

Graph showing recruitment at University Hospital Coventry and Warwickshire

6. Royal Shrewsbury Hospital

Feb-08

Mar-08

Apr-08

May-08

Jun-08

Jul-08

Aug-08

Sep-08

Oct-08

Nov-08

Dec-08

Jan-09

Total Deliveries (≥35 weeks gestation)

56

390

340

357

368

359

400

390

362

331

387

252

Consented and Registered (n)

54

322

297

309

318

307

334

333

309

285

293

203

Consented and Registered (%)

96%

83%

87%

87%

86%

86%

84%

85%

85%

86%

76%

81%

Missed

2

58

31

30

40

30

34

26

28

24

63

30

Declined

0

6

12

18

10

14

31

27

23

19

24

14

Ineligible

0

4

0

0

0

8

1

4

2

3

7

5

Total Cumulative Consented

54

376

673

982

1300

1607

1941

2274

2583

2868

3161

3364

Total Cumulative Deliveries

56

446

786

1143

1511

1870

2270

2660

3022

3353

3740

3992

Graph showing recruitment at Royal Shrewsbury Hospital