Table 2 Study characteristics
From: Seroprevalence of hepatitis A infection in a low endemicity country: a systematic review
| Â | Published Literature (n = 25) | Grey Literature (n = 9) |
|---|---|---|
| Â | Peer-reviewed study report (n = 25) | Public health report (n = 3) Abstract (n = 5) Unpublished report (n = 1) |
Study Design | Â | Â |
Case-control | 2 | 0 |
   Prospective (P) data acquisition | 16 | 7 |
   Retrospective (R) data acquisition | 5 | 2 |
   P & R data acquisition | 1 | 0 |
   Systematic review | 1 | 0 |
Sample Size | Â | Â |
>1000 | 4 | 3 |
100 – 1000 | 19 | 6 |
<100 | 2 | 0 |
   Median [1st, 3rd Quartile] | 427 [224, 720] | 793 [422, 1029] |
   Mean (Min, Max) | 877 (42, 5097) | 708 (122, 1206) |
Timing of data collection | Â | Â |
   2000 – 2004 | 2 | 3 |
   1990 – 1999 | 12 | 6 |
   1980 – 1989 | 7 | 0 |
   1970 – 1979 | 2 | 0 |
   Not reported | 2 | 0 |
Populations with prevalence data | Â | Â |
   Canadian born subjects | 4 | 3 |
   All Canadians¶ | 6 | 4 |
   Participants with known risk factors | 21 | 7 |
Seropositivity test | Â | Â |
   Serum samples | 22 | 6 |
   Saliva samples | 3 | 3 |