The following regression output is available. Notice that some of the values are missing. 
Given this information, what was the sample size used in the study?
Definitions:
Diversity Issues
Refers to the complexities and challenges related to the variety of different identities, backgrounds, cultures, and experiences in a group or society, and the efforts to address inequality and inclusion.
Treatment Tasks
Specific activities or assignments given to clients as part of their therapy to support their healing and growth.
Clinical Treatment Plans
Detailed, individualized strategies outlining the therapeutic approach and interventions for treating a patient's specific mental health needs.
Difference
Difference in a therapeutic context refers to the appreciation and acknowledgment of the unique characteristics, identities, and perspectives of individuals.
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