I could write a book on it but in a nutshell:

Determine if it is mechanical or non-mechanical low back pain
Identify yellow flags and red flags
Assess irritability
Assess if condition is improving or has been deteriorating since onset
Cause/onset of symptoms/mechanism of injury
Previous history
Medical history for underlying pathology
What aggravates and what relieves pain
Distribution of symptoms
Determine if radicular or non-radicular pain
Assess patients functional limitations

Is this what you were after??