The Therapeutic Environment Screening Survey for Nursing Homes (TESS-NH): an observational instrument for assessing the physical environment of institutional settings for persons with dementia.
OBJECTIVE
To develop an observational instrument that describes the ability of physical environments of institutional settings to address therapeutic goals for persons with dementia.


METHODS
A National Institute on Aging workgroup identified and subsequently revised items that evaluated exit control, maintenance, cleanliness, safety, orientation/cueing, privacy, unit autonomy, outdoor access, lighting, noise, visual/tactile stimulation, space/seating, and familiarity/homelikeness. The final instrument contains 84 discrete items and one global rating. A summary scale, the Special Care Unit Environmental Quality Scale (SCUEQS), consists of 18 items. Lighting items were validated using portable light meters. Concurrent criterion validation compared SCUEQS scores with the Professional Environmental Assessment Protocol (PEAP).


RESULTS
Interrater kappa statistics for 74% of items were above.60. For another 10% of items, kappas could not be calculated due to empty cells, but interrater agreement was above 80%. The SCUEQS demonstrated an interrater reliability of.93, a test--retest reliability of.88, and an internal consistency of.81--.83. Light meter ratings correlated significantly with the Therapeutic Environment Screening Survey for Nursing Homes (TESS-NH) lighting items (r =.29--.38, p =.01--.04), and the SCUEQS correlated significantly with global PEAP ratings (r =.52, p <.01).


CONCLUSIONS
The TESS-NH efficiently assesses discrete elements of the physical environment and has strong reliability and validity. The SCUEQS provides a quantitative measure of environmental quality in institutional settings.
Sloane
Philip D
PD
University of North Carolina, Chapel Hill 27599-7590, USA. psloane@med.unc.edu
Mitchell
C Madeline
CM
Weisman
Gerald
G
Zimmerman
Sheryl
S
Foley
Kristie M Long
KM
Lynn
Mary
M
Calkins
Margaret
M
Lawton
M Powell
MP
Teresi
Jeanne
J
Grant
Leslie
L
Lindeman
David
D
Montgomery
Rhonda
R
D000203:Activities of Daily Living; D003625:Data Collection; D003704:Dementia / Q000523:psychology / Q000628:therapy; D005163:Factor Analysis, Statistical; D006040:Goals; D019538:Health Care Surveys / Q000379:methods*; D006272:Health Facility Environment / Q000592:standards*; D006801:Humans; D007374:Interior Design and Furnishings / Q000592:standards*; D008029:Lighting / Q000592:standards; D008283:Maintenance; D020380:Needs Assessment; D009622:Noise / Q000009:adverse effects; D009735:Nursing Homes / Q000592:standards*; D015588:Observer Variation; D010812:Physical Stimulation; D018907:Privacy; D011594:Psychometrics; D011785:Quality Assurance, Health Care / Q000379:methods*; D012449:Safety / Q000592:standards