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Table 2 Unadjusted factors contributing to high peritonitis rate among children on peritoneal dialysis

From: Factors influencing occurrence of peritonitis in Saudi children on peritoneal dialysis

      

95% CI for RR

Factors

Reference

B

SE

P

RR

Lower

Upper

Female

Male

1.977

0.595

0.001*

7.218

2.247

23.184

Age: 6–10 yrs

<  6 yrs

−0.667

1.092

0.542

0.513

0.060

4.364

Age: >  10 yrs

<  6 yrs

− 0.071

1.219

0.953

0.931

0.085

10.151

Residency: Outside Riyadh

Riyadh

1.118

0.899

0.214

3.060

0.525

17.823

Low socioeconomic

Average or high

2.308

1.114

0.038*

10.051

1.134

89.128

Diagnosis

 Congenital nephrosis

Others

1.896

0.830

0.022*

6.658

1.308

33.886

 Hypoplastic kidney

Others

1.462

0.893

0.102

4.313

0.750

24.808

 Reflux nephropathy with neurogenic bladder

Others

−0.182

0.434

0.675

0.834

0.357

1.950

Glucose concentration

 2.50%

1.50%

1.417

1.074

0.187

4.123

0.503

33.807

 Mixed (1.5–2.5%)

1.50%

0.550

0.419

0.189

1.733

0.763

3.939

 Catheter removal

No

0.749

0.682

0.272

2.115

0.555

8.055

 Height: below 3rd percentile

Appropriate

1.680

0.658

0.011*

5.366

1.478

19.476

 Weight: below 3rd percentile

3rd-95th percentile

1.858

0.661

0.005*

6.408

1.754

23.413

 Urine output: Anuria

Passing

1.850

0.638

0.004*

6.360

1.822

22.199

 Abnormal WBC

Normal (4–12 g/l)

0.488

0.409

0.232

1.630

0.731

3.633

 Neutrophils: High

Normal

1.761

0.678

0.009*

5.816

1.541

21.941

 Peritoneal cell count: 100 or less

More than 100

1.517

2.293

0.508

4.557

0.051

407.810

 Peritoneal analysis: More than 50

50 or less

1.970

0.556

0.001*

7.173

2.413

21.323

Peritoneal fluid culture

 Coagulase-negative staph

No growth

1.109

0.441

0.012*

3.030

1.277

7.189

 Viridans streptococci

No growth

0.913

0.849

0.282

2.491

0.472

13.147

 Others

No growth

2.217

0.787

0.005*

9.179

1.964

42.899

 Albumin level: Low

Normal

1.647

0.668

0.014*

5.189

1.402

19.215

Antibiotic type

 Cefazolin

Mixed(cefazolin+ceftazidime)

−0.084

0.726

0.908

0.919

0.222

3.815

 Ceftazidime

Mixed(cefazolin+ceftazidime)

0.906

0.733

0.217

2.475

0.588

10.419

 Vancomycin

Mixed(cefazolin+ceftazidime)

1.005

0.726

0.166

2.732

0.658

11.334

 Other

Mixed(cefazolin+ceftazidime)

3.031

1.464

0.038*

20.723

1.177

364.880

Duration of antibiotic

 2 weeks

10 days

1.302

0.553

0.019*

3.677

1.244

10.868

 3 weeks/3 months

10 days

1.500

1.224

0.220

4.482

0.407

49.349

  1. *The Wald Chi-Square test is significant at P ≤ 0.05. RR unadjusted rate ratio. B, the estimated Poisson regression coefficient