Study Ho et al. (1995): study HK 1992
- Public
 - 70+aged, Hong Kong, 1991-1992
 - Survey name
 - Unnamed study
 - Sample
 - Respondents
 - N = 1557
 - Non Response
 - Assessment
 - Interview: face-to-face
 
Correlate
- Authors's Label
 - Poor functional ability-Barthel Index
 - Our Classification
 - 
            
 - 
                        
 - Remarks
 - Barthel(1965)functional ability index, Chinese version
 - Operationalization
 - Self report of ability in the functional activities 
a: Feeding
0 = unable
5 = needs help cutting, spreading butter, etc., or requires modified diet
10 = independent
b: Bathing
0 = dependent
5 = independent (or in shower)
c: Grooming
0 = needs to help with personal care
5 = independent face/hair/teeth/shaving (implements provided)
d: Dressing
0 = dependent
5 = needs help but can do about half unaided
10 = independent (including buttons, zips, laces, etc.)
e: Bowels
0 = incontinent (or needs to be given enemas)
5 = occasional accident
10 = continent
f: Bladder
0 = incontinent, or catheterized and unable to manage alone
5 = occasional accident
10 = continent
g: Toilet Use
0 = dependent
5 = needs some help, but can do something alone
10 = independent (on and off, dressing, wiping)
h: Transfers (bed to chair and back)
0 = unable, no sitting balance
5 = major help (one or two people, physical), can sit
10 = minor help (verbal or physical)
15 = independent
i: Mobility (on level surfaces)
0 = immobile or < 50 yards
5 = wheelchair independent, including corners, > 50 yards
10 = walks with help of one person (verbal or physical) > 50 yards
15 = independent (but may use any aid; for example, stick) > 50 yards
j: Stairs
0: unable
5= needs help (verbal, physical, carrying aid)
10= independent
TOTAL (0-100) 
Observed Relation with Happiness
OR controlled for:
-place of residence
-marital status
-presence of joint pain