Unlike the other phrases, the transitional phrase “As a result” is not used to show the cause, origin or reason of an event or of something but to indicate a consequence, effect, or outcome of something. Here are some examples of how to use them:
<em>Sue got really ill yesterday, as a result, she will not attend this afternoon meeting.</em>
<em>As a result of the accident, he was out of work for three months.</em>