Many psychotherapists believe that the nuances of psychotherapy cannot be captured by questionnaire-style observation, and prefer to rely on their own clinical experiences and conceptual arguments to support the type of treatment they practice.
Recommendation: The clear opening of a doorway should be at least 32. This would require a minimum 34 or 2'-10 door. For universal design, the minimum clear width is 34. If the existing structure precludes changing the opening then a minimum 24 or 2'-0 door is allowable. The door opening width is measured from jamb to jamb.
Re: Garage service door width While SP may be correct about the width, some local regulations do set minimum heights on all doors. One example is from the State of Connecticut: The required exit door shall be a side-hinged door not less than 3 feet in width and 6 feet, 8 inches in height.