abscondingsince is a date field with value 2016-08-24 and dateofcontactviaphone is a date field with value 2016-08-26.
When I try to use CodeIgniter's date helper function timespan() like this:
echo timespan($row['abscondingsince'], $row['dateofcontactviaphone']);
it's giving 2016-08-2446 Years, 8 Months, 3 Days, 5 Hours, 43 Minutes as the output. This is obviously wrong because the dates are only 2 days apart.
Supply your dates to the function as Unix timestamps like this:
echo timespan(
strtotime($row['abscondingsince']),
strtotime($row['dateofcontactviaphone'])
);