For a qualitative analysis of a strategic decision you might use a Lickert-type scale via surveys.  For a quantitative analysis you might choose to examine some type of return on investment (ROI).  What are the units of the strategic decision?

Qualitative analysis of strategic decision could be done by surveying the opinions of the stakeholders on parameters like : Qualitative benefits to the stake holders , Acceptability by the stake holders, Ease of implementation , change in the level of satisfaction / dissatisfaction of the stake holders , sustainability etc.

Quantitative analysis  could be on the basis of  factors like tangible benefits ( in revenue growth, income growth, market share etc), cost of implementation etc.

In both the cases, relative weights can be given   to each factor and overall weighed average may be worked out. 

Are you interested in measuring a perceptive grade of "quality" or associate the decision to other variables as suggested from Jeremy Robertsen. Under this perspective think about the objectives he/she may have to accomplish or which are the expectations from  the share or stakeholder of the firm/organization.  I think there is no "absolute" quality but the ones that are relatively important for the organization or industry. For instance, an ethical behaviour could be considered qualitative indicator. 

Hi. Please pay attention very carefully. The best method for evaluation and measurement of the quality of the Strategic Decision is the Shannon's Entropy. This method is very perfect and practical method for your purpose. Good luck.

We had identified specific areas / CSFs according to management:

B.11.1. Revenue growth

B.11.2. Product innovations (eg providing innovative services)

B.11.3. Flexible adaptation to customer needs

B.11.4. Relations with customers

B.11.5. Fast and timely conduct of proceedings and service of companies (taking care of clients' time)

B.11.6. Caring for a high quality service delivery process

B.11.7. Cost-effectiveness

B.11.8. Property equipment

B.11.9. Employment, employee productivity

B.11.10. Stimulating quality culture, continuous learning and innovation

B.11.11. Compliance of the organization's activities with its regulations (Compilance)

KPIs i.e.:

% growth of case's (i.e. decisions)

time spend with clients

% of actions approved by management

no. of decisions taken on time

no. of exeeded deadlines

Publication is (unfortunately) in polish:

W. Skoczylas, A. Niemiec, [ed.] Leksykon wskaźników efektywności, CeDeWu, Warszawa 2016, pp. 269-275

Quality of strategic decisions reflect in their outcomes. if the outcome is effective then quality of the decision is also good e.g. if certain strategic initiatives are taken to reduce employee turnover (which is affecting the organisational image as well as performance) then the quality of those initiatives will reflect in reduced employee turnover.

Strategy decision has to do with the following :

-Use of organizational principles

Decision making process

-Decision Tree

Delphi technique

If the above stated strategies are followed step by step it enables the decision maker to  know where she/he is in process.

Irrespective of whether the decision is strategic or not, effectiveness can be measured across four dimensions, viz., quality, speed, yield, and effort. Of course, high-performance organizations make high-quality decisions: but, they also arrive at them faster than their competitors; they translate them into action more effectively; and, they devote appropriate amounts of effort to the processes that underpin each.

we measure the Quality of strategic Decision is only depends upon its quality, speed and effort.

The quality of strategic decisions can be measured by using PMM systems such as Balanced Scorecard. This includes lead and lag variables of performance. You may also see papers on Flexible Strategy Game-card, which takes the duality of Enterprise strategic factors and Customer factors.

Thank you Professor Sushil for your valued information, if possible provide me with links or articles related to what you added above

Please see the attached files.