Meta-analysisindependent cross-checkabstract checked★ key study I-SYS-105 in-depth review

Most sore throats get better on their own

Antibiotics for treatment of sore throat in children and adults.

Overview

Spinks A et al.. Cochrane Database Syst Rev 2021 · PMID 34881426 · DOI 10.1002/14651858.CD000023.pub5

82% of people without antibiotics were symptom-free within a week; antibiotics still prevented some complications.

Does the study support the specific claim? Partly · Methodological quality: high

Original publication

Plain-language summary

Study explained simply
What did the researchers want to find out?

Antibiotics for sore throat.

How was the study done?

Cochrane review.

How many people, animals or samples were studied?

29 trials.

What was actually found?

Most heal alone; antibiotics help modestly.

How large was the observed effect?

RR 0.50 at 1 week.

What do the results mean in everyday life?

Self-healing is real for minor illness, not for everything.

What are the study's limitations?

Old trials.

What does it say about Elawady's specific claim?

Supports the kernel, not 'unlimited' healing.

Do the results apply to Germany and Europe?

High.

What can explicitly not be concluded from this study?

Serious diseases.

Scientific in-depth review

1. Full reference

Authors
Spinks A et al.
Journal
Cochrane Database Syst Rev
Year
2021
Identifier
PMID 34881426 DOI 10.1002/14651858.CD000023.pub5
Verification
verified – PubMed efetch 2026-10-26 + Crossref
Retracted
no
Corrections
none
Extent checked
abstract only
Conflicts of interest and funding

Author declarations in record (one author on Therapeutic Guidelines board)

2. Research question

Effects of antibiotics vs placebo/no treatment for sore throat

3. Study design and population

Study design
Meta-analysis – Cochrane systematic review and meta-analysis of RCTs
Population

Children and adults with sore throat

Country

International

Period

Searches to April 2021

Sample size

29 trials, 15,337 cases

Inclusion and exclusion criteria

RCTs/quasi-RCTs with placebo or no-treatment control

4. Methods and endpoints

Exposure / intervention

Antibiotics

Comparator

Placebo or no treatment

Endpoints

Symptoms day 3 and week 1; complications

Statistical methods

Meta-analysis; GRADE

5. Actual results

Results

82% of placebo/no-treatment participants were symptom-free by one week. Antibiotics reduced sore throat at day 3 (RR 0.70, 0.60-0.80) and week 1 (RR 0.50, 0.34-0.75; NNTB 18), reduced acute otitis media (Peto OR 0.21) and quinsy (Peto OR 0.16) and acute rheumatic fever (Peto OR 0.36, moderate certainty).

Absolute risks

NNTB <6 at day 3; 18 at week 1

Authors' conclusion

Antibiotics probably reduce symptoms and some complications; benefits are modest and must be weighed against resistance.

6. Strengths

  • Cochrane methods
  • GRADE

7. Weaknesses

  • Most trials from the 1950s

8. Risk of bias

Orienting tool
AMSTAR 2
Type of assessment
simplified assessment (abstract only)
Full formal assessment
no
Overall risk of bias
low
Rationale

Cochrane review.

9. Assessment of the statistical interpretation

Implied control risk at week 1 ~11% from NNT 18 and RR 0.50 (recalculated).

10. Relevance to the specific claim

Fair example of the correct kernel: many acute illnesses resolve on their own; but treatment still prevents some serious complications.

11. Independent contrary findings

12. Transferability to Germany and Europe

High.

13. Overall methodological judgement

Mixed: supports self-limitation of minor illness, not unlimited self-healing.

Multidimensional assessment
Multidimensional assessment
Authenticity of the sourceverified
Methodological qualityhigh
Risk of biaslow
Precision of resultshigh
Directnessindirect
Reproducibilityreplicated
Consistency with the overall evidenceconsistent
Regional transferabilityhigh
Adequacy of the interpretation (by the archive)not applicable

14. Open questions

15. Linked fact checks