Sentence examples for notification bias from inspiring English sources

For this purpose, two databases were merged: the French Milk Records database, and the French BSE database, which can be considered as being devoid of notification bias since July 2001, when systematic tests were implemented.

Selection and notification bias may affect studies based on the ELSO database, for that inclusion of patients into the registry is voluntary and only selected centres can be members of the network.

This study also assessed trends of pertussis and implications for prevention strategies independent of notification and diagnostic bias.

Significant amounts of missing data associated with case notifications can introduce bias in the estimation of disease rates by population subgroups.

A bias of notification would not be excluded.

Third, any analysis based on case notification data may be biased towards detecting a positive DOTS effect, as institution of DOTS may lead to improved reporting of cases already detected.

To check for an increase in notifications due to reporting bias of gastroenteric diseases, we compared the quarterly incidence data from 2002 through 2006 with data on Salmonella spp. infections (usually reported by local general practitioners) and rotavirus and norovirus infections (both usually reported by clinics).

Notification does not suggest reporting bias of gastroenteric infections.

The 3 to 4-year periodicity trend in pertussis dynamics has been observed in countries with very different vaccination levels and socio-demographic conditions [ 3], suggesting that other factors are operating beyond the role of susceptible recruitment and vaccination coverage [ 3], such as, population density, urbanization and the degree of biases in the notification of the disease.

Missing socio-demographic identifiers for notified cases can compromise the validity of inferences based on the data by introducing bias in estimated disease notification rates by population subgroups.

The WAMHS sample differed to all melanoma notifications only in age, with a bias towards older individuals (P < 0.0001).