Table 2.
PRISMA score based on the journal type, impact factor, years since publication, country of corresponding author, number of authors, type of immunization intervention.
| Category | Characteristic | N (%) |
|---|---|---|
| Type of journal | Vaccine specialty | 11 (19%) |
| General | 37 (65%) | |
| Other specialties | 8 (14%) | |
| Journal impact factor by review | 0–2 | 6 (11%) |
| 2.1–5 | 31 (55%) | |
| 5.1–10 | 18 (32%) | |
| >10 | 1 (2%) | |
| No. of authors | 1 | 1 (2%) |
| 2–3 | 19 (33%) | |
| 4–6 | 18 (32%) | |
| >7 | 19 (33%) | |
| Country of corresponding author | United States | 19 (33%) |
| Canada | 11 (19%) | |
| United Kingdom | 12 (21%) | |
| Australia | 2 (4%) | |
| Switzerland | 2 (4%) | |
| Norway | 3 (5%) | |
| Italy | 2 (4%) | |
| India | 1 (2%) | |
| Thailand | 1 (2%) | |
| Nigeria | 1 (2%) | |
| Greece | 1 (2%) | |
| China | 2 (4%) | |
| Year since Publication | ≥1 | 21 (37%) |
| 2–3 | 10 (18%) | |
| 4–6 | 06 (11%) | |
| 7–9 | 04 (07%) | |
| ≥10 | 16 (28%) | |
| Type of immunization intervention | RO | 10 (18%) |
| PO | 12 (21%) | |
| RO+PO | 14 (25%) | |
| RO+PO+HSO | 16 (28%) | |
| PO+HSO | 2 (4%) | |
| RO+HSO | 2 (4%) | |
| Update of a previous review | 11 (19%) | |
| N.B: NR, not reported; RO, recipient oriented; PO, provider oriented; HSO, health system oriented. | ||