Pew Research Center designed this study to assess the current state of online survey sampling methods – both probability-based and opt-in – and determine their accuracy on general population estimates ...
A key aspect of ecological research is to quantify ecological responses to environmental change. Ecological responses are often characterized by high degrees of non-linearity, which challenge research ...
To evaluate the accuracy and acceptability of self-sampling samples for HPV testing for cervical cancer screening in rural Yunnan of China. In 2022, 3000 women aged 17–69 were recruited and provided ...
Some results have been hidden because they may be inaccessible to you
Show inaccessible results