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Next thing: Material and methods

Next thing: Material and methods

All devices in Sweden that perform ultrasound exams for pregnancy dating purposes had been expected to accomplish a questionnaire that is web-based. Medical care in Sweden is administered in 21 counties, and contact information for the units that are ultrasound found through each county’s official webpage or through personal associates.

The questionnaire included 30 question products split into four measurements: 1) standard information on the responder therefore the device; 2) the unit’s present practice that is clinical maternity dating; 3) former training and modifications as time passes; and 4) evaluation regarding the precision for the believed gestational age and just how discrepancies between your last-menstrual-period- and ultrasound-based practices had been managed. Concerns and replies had been printed in Swedish (a translated copy for the questionnaire can be obtained on demand). The questionnaire comprised primarily multiple-response questions but included fields that are commentary. The quoted feedback have now been translated into English.

The questionnaire had been piloted among three fellow obstetricians and, after modifications, ended up being distributed from the web-based platform. The survey was sent by post after two reminders or in cases of invalid email address.

Statistical analyses

The replies had been electronically entered or registered manually for replies by post. Analyses had been carried out making use of descriptive analytical practices in IBM SPSS Statistics version In the event that responses to multiple-response concerns did maybe maybe perhaps not coincide with all the answers in responses, concern was presented with to information stated in responses.

Ethical approval

The Regional Ethical Review Board in Uppsala, Sweden, authorized the analysis (guide quantity 2012/412, amendment approved November 15, 2017).


The reaction price had been 79%: 38 legitimate replies, five nonresponses, and five excluded reactions (two smaller devices included in larger devices’ responses, two dual responses, and another blank, anonymous response).