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Table 2 Number of CRs and RCTs ranked by number of RCTs

From: Determining the gaps between Cochrane reviews and trials of effectiveness of interventions for acute respiratory infections: an audit

Intervention

Health condition

No. of RCTs

No. of CRs

Vaccination

Influenza

525

6

Vaccination

Pertussis

303

4

Antibiotic vs antibiotic

Pneumonia

269

0

Vaccination

Diphtheria

246

2

Vaccination

Tetanus

236

2

Antibiotic vs placebo

Pneumonia

205

11

Vaccination

Croup

188

1

Vaccination

Measles

161

2

Antiviral

Influenza

147

4

Antibiotic vs antibiotic

Bronchitis, acute

146

0

Vaccination

Pneumococcus

143

2

Antibiotic vs antibiotic

Pharyngitis/sore throat

140

0

Antibiotic vs antibiotic

Otitis media

135

0

Antibiotic vs placebo

ARI non-specific

129

3

Vaccination

Meningitis

116

1

Antibiotic vs placebo

Otitis media

114

4

Antibiotic vs antibiotic

ARI non-specific

106

0

Antibiotic vs placebo

Pharyngitis/sore throat

90

4

Vaccination

Mumps

86

1

Antibiotic vs antibiotic

Sinusitis

82

0

Vaccination

Rubella

80

1

Vaccination

Polio

67

0

Immunotherapy

ARI non-specific

65

1

Antibiotic vs placebo

Bronchitis, acute

60

2

Antibiotic vs placebo

Sinusitis

60

1