| Methods |
Both 'completed random method' and double‐blind was mentioned |
| Participants |
4 groups with different interventions (selenium) were selected. Data in vitamin A group and placebo group were extracted. 18 children in vitamin A group and 21 in placebo group. All children were younger than 14 years old |
| Interventions |
Children in vitamin A group received a dose of vitamin A 150,000 IU orally |
| Outcomes |
Variate outcomes were used; we only extracted data from those that matched the inclusion criteria for this review:
1. clearance time of fever
2. remission time of cough
3. remission time of positive finding of auscultation
4. remission days of positive finding at chest X‐ray |
| Notes |
Setting: Youyi Hospital, Beijing. |
| Risk of bias |
| Bias |
Authors' judgement |
Support for judgement |
| Adequate sequence generation? |
Unclear risk |
"Completed random method" was mentioned but lacked a detailed description |
| Allocation concealment? |
High risk |
Not concealment mentioned |
| Blinding?
All outcomes except mortality |
Low risk |
Double‐blinding |
| Incomplete outcome data addressed?
All outcomes except mortality |
High risk |
|
