For a driver aged 60 years or older, what Saint Louis University Mental Status (SLUMS) score is considered acceptable for driving in Alberta?

No Specific SLUMS Cutoff Score for Driving in Alberta

There is no established SLUMS score cutoff specifically designated as acceptable for driving in Alberta. The available Canadian guidelines for fitness to drive do not reference the SLUMS examination as part of their driving assessment protocols.

What the Canadian Guidelines Actually Recommend

The Canadian Stroke Best Practice Recommendations 1 and the Canadian Cardiovascular Society guidelines 2 reference the Canadian Council of Motor Transport Administrators (CCMTA) Medical Standards for Drivers as the governing framework. These guidelines specify that:

For cognitive screening related to driving fitness:

• Patients should undergo screening by an occupational therapist using valid and reliable methods for residual sensory, motor, or cognitive deficits 1
• Cognitive assessment should focus on perception, problem solving, speed of decision making, and judgment 1
• A comprehensive neurological assessment including cognitive ability is required 1

However, no specific cognitive test or cutoff score is mandated. The guidelines emphasize functional assessment rather than a single test score.

Why SLUMS Alone Is Insufficient for Driving Decisions

The SLUMS examination, while validated for detecting mild cognitive impairment and dementia 3, was not designed or validated specifically for driving fitness assessment. The research shows:

• SLUMS cutoff scores vary by education level: ≤24 for MCI and ≤17 for dementia in recent validation studies 4
• Original cutoffs (≤26 for MCI, ≤20 for dementia in high school educated individuals) 5, 6 have been revised
• The test measures general cognitive domains but does not assess driving-specific skills like reaction time, visual-spatial processing under time pressure, or real-world decision-making 1

The Appropriate Clinical Approach

If you need to assess driving fitness in an older adult:

1. Screen for cognitive deficits using validated tools (SLUMS can be part of this, but should not be the sole determinant)
2. Assess specific driving-relevant domains:
   • Vision and visual fields
   • Motor strength and coordination
   • Reaction time
   • Executive function and judgment 1
3. Refer for comprehensive driving evaluation if any residual neurological deficits are present, including a government-sanctioned on-road assessment 1
4. Consider occupational therapy evaluation specifically focused on driving skills 1

Critical Caveat

Using a SLUMS score alone to clear or restrict driving privileges would be inappropriate and potentially dangerous. Driving is a complex instrumental activity requiring integration of multiple cognitive, sensory, and motor functions that cannot be captured by a single screening test score. The decision must be based on comprehensive functional assessment, ideally including on-road evaluation when concerns exist 1.