Television and radio stories may use only a 10-30 second cut. The shorter your comments, the less likely they are to be edited. Even print reporters are looking for short, snappy quotes. Remember that you are the expert. Stick to your main points and do not allow yourself to get drawn too far off on tangents.
Most people make the mistake of talking too much.
Repeat your points if necessary to get back on track. Speak in complete thoughts. The reporters's question may be edited out and your response should stand on its own. Don't overestimate a reporter's knowledge of your subject. When a reporter bases a question on information you believe is incorrect, do not hesitate to set the record straight.