Total Thread Views Counting Wrong

[Boofo]

Can anyone please help me figure out why the $totalviews always add 1 or 2 to the thread view count whenever someone views a thread? It should only be adding 1 for each view but it is adding between 2 and 3 for every thread view, for some reason.

$countthreads=$DB_site->query_first('SELECT count(*) AS threads, SUM(views) AS views FROM thread');
$totalthreads=number_format($countthreads['threads']);
$totalviews=number_format($countthreads['views']);