At first, Pew Research found few significant differences that persisted after weighting between the two types of surveys.
Two types of surveys were employed in this evaluation.
We obtained Kappa coefficients below 0.25, indicating the agreement between use frequencies reported in two types of surveys were rather poor.
A systematic review of response rates for the two types of surveys, for instance, found that internet surveys had an average response rate of 33%, compared to 56% for paper questionnaires [ 11, 12].
The majority 74-977% depending on the type of pesticide application) of the households provided the same answers for whether or not they applied certain pesticides in the past year in each of the two types of surveys (Table 4).
The aim of this study was to investigate the difference in annoyance reporting due to road traffic noise in two types of surveys of which one was introduced broadly and the other with the clearly stated aim of investigating noise and health.
The aim of the present study was to investigate the difference in annoyance reporting due to road traffic noise between two types of surveys, one general public health survey with a wide scope and the other with a clearly stated aim of investigating noise and health.
Answers from participants who completed both telephone and web surveys showed strong to excellent agreement between the two types of surveys on pesticide use/non-use 74-955% agreement), frequency of use (68-90% agreement for low frequency users), and who applied the pesticide in the home 70-800% agreement).
It should be noted that only weekdays (Monday-Friday) were available in the three types of survey and thus in this analysis.
Three types of survey questionnaire were administered depending on the age of the participating caregivers' first child.
