Grid analysis

Grid analysis, also referred to as ‘decision matrix analysis’, is most effective when there are a number of good alternatives and many factors to take into account.

• List all options and factors that are important for making the decision
• Arrange options as the row labels, and factors as the column headings (see figure 2)
• Work out relative importance of the factors in your decision
• Score each option from 0 (poor) to 3 (very good)
• Multiply scores by the values for your relative importance
• Add up weighted scores for your options. The option that scores the highest wins.

In the example below, the problem is defined as a deficient consultation room to deliver modern healthcare services.

Option 1 – one glass-panelled consulting room, sized 1m x 1.5m, on the ground floor

Option 2 – one closed-in room with a glass door, on ground floor and sized1m x 1.5m

Option 3 – two consulting rooms on the first floor, each of 2m x 3m.

When the relative importance of each of the criteria is weighted (below), there was a surprising result.