Table 1
Categories of articles permitted in order of frequency.
| Category of article | N |
|---|---|
| Original research | 119 |
| Review papers | 116 |
| Discussion papers | 92 |
| Correspondence | 51 |
| Editorials | 36 |
| Case studies | 33 |
| Commentaries | 32 |
| Quality improvement | 27 |
| Short reports | 17 |
| Policy analyses | 11 |
| Protocols | 6 |
| Pilot studies | 4 |
| Concept analysis | 4 |
| Book/media reviews | 3 |
| Expert interview | 1 |

Figure 1
Categories of articles permitted in order of frequency (%)*. Note: *NB: the total% is >100 as journals publish > type of article.
Table 2
Categories of articles published in order of frequency.
| Type of article | N |
|---|---|
| Original research | 7045 |
| Review papers | 1268 |
| Discussion papers | 1225 |
| Editorials | 793 |
| Commentaries | 776 |
| Pilot studies | 173 |
| Correspondence | 142 |
| Short reports | 125 |
| Quality improvement | 87 |
| Concept analysis | 70 |
| Case studies | 59 |
| Protocols | 58 |
| Policy analyses | 48 |
| Book/media reviews | 34 |
| Expert interview | 21 |
| Total | 11,924 |

Figure 2
Categories of articles published in order of frequency (%).