Study | Healthy vaccinee biasa | Confounding by indicationb | Indicated by |
---|---|---|---|
Bond et al. (2012) [17] |
|
| Vaccinated participants have more comorbidities; unvaccinated have worse laboratory values |
Campitelli et al. (2011) [7] |
|
| Vaccinated participants have more comorbidities; unvaccinated patients have worse functional status |
Foster et al. (1992) [18] |
|
| More comorbidities in vaccinated participants |
France et al. (2006) [34] |
|
| More comorbidities in vaccinated participants |
Groenwold et al. (2009) [19] |
|
| More comorbidities, medications and medical visits in vaccinated participants |
Hottes et al. (2011) [20] |
|
| More medical visits in vaccinated participants |
Jackson et al. (2002) [21] |
|
| More comorbidities in vaccinated participants |
Jackson et al. (2006) [3] |
|
| More comorbidities in vaccinated participants |
Jackson et al. (2008) [5] |
|
| No major differences in baseline characteristics between groups |
Johnstone et al. (2012) [33] |
|
| Vaccinated participants have more CAD; unvaccinated have more diabetes and hypertension |
Liu et al. (2012) [22] |
|
| More comorbidities in vaccinated participants |
Mangtani et al. (2004) [16] |
|
| More comorbidities and medications in vaccinated participants |
McGrath et al. (2012) [23] |
|
| Better adherence to dialysis and fewer years with end-stage renal disease in vaccinated participants |
Nichol et al. (2008) [24] |
|
| More comorbidities in vaccinated participants |
Nichol et al. (2009) [25] |
|
| No major differences in baseline characteristics between groups |
Ohmit et al. (1995) [26] |
|
| Unclear data and description |
Omer et al. (2011) [27] |
|
| Some comorbidities different (diabetes) between groups, other not (hypertension) |
Örtqvist et al. (2007) [15] |
|
| More comorbidities in vaccinated participants |
Schembri et al. (2009) [28] |
|
| More comorbidities in vaccinated participants |
Sung et al. (2014) [29] |
|
| More comorbidities in unvaccinated participants |
Tessmer et al. (2011) [30] |
|
| More comorbidities in vaccinated participants |
Villa-Corcoles et al. (2007) [31] |
|
| More comorbidities in vaccinated participants |
Wong et al. (2012) [32] |
|
| More comorbidities and medications in vaccinated participants |