Rating scales Flashcards
How many items are on the YMRS?
11
- Mania if > 12
- Note many studies need patients to score > 20
- 4 items out of 8, other 7 items out of 4
- Time period is last 48 hours
- Includes items on observation
Which depression scale is most sensitive to change?
MADRS
Name a self-rated questionnaire used to detect new psychiatric illness?
General health questionnaire - presence of symptoms in preceding weeks
Can also be used by primary care and other general physicians and in community studies - good at identifying “caseness”
4 versions exist with 12, 28, 30 and 60 items - max score on 28 item is 84
What score on the short alcohol withdrawal scale indicates a moderate/severe withdrawal requiring pharmacotherapy?
> 12
< 12 is mild withdrawal
Which has more cognitive items BDI or MADRS
BDI
> 17 indicates moderate depression
30 indicates severe depression
BDI can be used in individuals > 13 years old –> good screening in those 14-18
What does the HoNOS measure?
Health care and social outcomes in secondary care mental health patients aged 18-65 –> sensitive to detecting recovery over time
Developed by RCPsych
What scales are available to screen for depression in children?
Mood and feelings questionnaire - 8 to 18 years
Children depression inventory 7 - 18
BDI 14 to 18 years
Center for Epidemiological Studies-Depression Scale for Children (CES-DC) 12 to 18 yearsWh
Why is there benefit of using the Edinburgh Postnatal Depression Scale?
Relies less on somatic symptoms
What scores in the AUDIT indicate harmful/hazardous and dependent drinking?
8 indicates harmful/hazardous
13 indicates dependent drinking
Name some characteristics scales must fulfil to be of use clinically?
Appropriate
Reliable & valid
Responsive
Readily interpretable
Acceptable and feasible
What Cronbach’s alpha value is set for good internal consistency?
> 0.70
Calculated by the average of each items correlation coefficient with the total score.
What is the split-half reliability?
Splitting the scale into two parts and examining the correlation
What is the intraclass correlation coefficient?
The amount of total variance of a measurement that actually reflects the real life between subject variation
Kappa or weighted kappa is used for nominal data with more than two categories
What is construct validity?
Does the scale measure the underlying phenomenon:
- Content validity –> do the items or subscales cover the general domain and reach specifications set.
- Criertion validity:
–> Predictive: does the scale predict later outcomes related to the construct
–> Concurrent: does the scale differentiate between individuals who may score high for a measure of a similar domain i.e. match with what we already know . i.e an insomnia scale showing they score highly on a fatigue scale
What is:
a) Convergent validity
b) Discriminant validity
c) Experimental validity
a) Convergent validity –> assess if scale corresponds with another scale measuring the same construct
b) Discriminant validity –> assess if scale discriminates between another measure assessing an unrelated concept. Does HRSD differ to HAM-A scale
c) Experimental validity –> assess if scale is sensitive over time
Factorial validity –> is a form of construct validity assessed through factor analysis
