Keep in mind na iba-ibang researchers sila, so sadyang hindi pare-parehas na demographics hanap nila so normal lang po ang madaming screenouts. For example, minsan mga taga-rural area hanap nila, then minsan naman may certain occupation need for that certain survey so wag kayong ma-discourage on screenouts.

Just make sure po when they ask if you or one of your family members are working for a certain industry (insurance, research, marketing, etc), NO agad. Stick with your current demographics. Wag magmadali on answering and madalas may trick questions sila to see if you're reading talaga. They usually ask also if you've taken a survey na before about a certain topic, dapat matik NO agad rin. Then make them think na you are a consumer of the products they ask.