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. 2012 Jul 26;12:108. doi: 10.1186/1471-2288-12-108

Table 3.

Reliability estimates on demographic, health risk factors and co-morbidity of people aged 16 years and over in South Australia, Australia

  Response at 1stinterview (%) Response at 2ndinterview (%) Observed Agreement (%) Expected Agreement (%)   Reliability value
Age
 
 
 
 
ICC
1.00
16-34 years
10.4
10.4
 
 
 
 
35-54 years
21.4
21.4
 
 
 
 
55 years and over
68.2
68.2
 
 
 
 
Gender
 
 
100.0
51.2
Kappa
100.0
Male
42.2
42.2
 
 
 
 
Female
57.8
57.8
 
 
 
 
Number of people in household aged 16 +
ICC
0.97 (0.97 - 0.98)
Number of people in household aged < 16
ICC
0.99 (0.99 -1.00)
Region of birth
 
 
99.4
62.1
Kappa
0.98 (0.95 – 0.99)
Oceania and Antarctica
76.6
77.3
 
 
 
North West Europe
16.9
16.2
 
 
 
 
Southern and Eastern Europe
2.6
2.6
 
 
 
 
North East Asia
0.6
0.6
 
 
 
 
Southern and Central Asia
1.9
1.9
 
 
 
 
Americas
1.3
1.3
 
 
 
 
Health service used in last 4 weeks
Mean (sd)
4.7 (4.917)
4.8 (5.937)
 
 
ICC
0.90 (0.86 - 0.93)
Range
0-30
0-52
 
 
 
 
Number of times provided
95.5
99.4
 
 
 
 
Not stated
4.5
0.6
 
 
 
 
HEALTH STATUS
 
 
 
 
 
 
Overall health status
 
 
85.8
64.3
Weighted Kappaa
0.60 (0.46 - 0.75)
Excellent
13.0
13.0
 
 
 
Very good
36.4
39.6
 
 
 
 
Good
31.8
34.4
 
 
 
 
Fair
16.2
9.7
 
 
 
 
Poor
2.6
3.2
 
 
 
 
Health conditions (ever been diagnosed by a doctor)
Asthma (ever)
14.3
13.0
93.5
76.4
Kappa
0.72 (0.56 - 0.87)
Diabetes
8.4
8.4
100.0
84.5
Kappa
1.00
Arthritis
26.0
27.3
92.2
60.9
Kappa
0.80 (0.693 - 0.91)
Heart attack
6.5
6.5
97.4
87.9
Kappa
0.79 (0.583 - 0.99)
Angina
3.2
4.5
98.7
92.5
Kappa
0.83 (0.592 - 0.99)
Heart disease
3.9
3.2
96.8
93.1
Kappa
0.52 (0.17 - 0.89)
Stroke
2.6
1.9
99.4
95.6
Kappa
0.85 (0.57 - 0.99)
Osteoporosis
7.1
5.8
99.4
87.9
Kappa
0.79 (0.58 - 0.99)
HEALTH-RELATED RISK FACTORS
Ever been told by doctor or nurse you have …
High blood pressure
35.1
37.0
91.6
53.9
Kappa
0.82 (0.72 - 0.91)
High cholesterol
38.3
37.7
90.3
52.9
Kappa
0.79 (0.69 - 0.89)
Height (cms)
 
 
 
 
 
 
Mean (sd)
169.6 (9.735)
169.2 (9.429)
 
 
ICC
0.97 (0.96 - 0.98)
Range
147.3-193.0
147.3-193.0
 
 
 
 
Height provided
98.7
98.7
 
 
 
 
Not stated
1.3
1.9
 
 
 
 
Weight (kgs)
 
 
 
 
 
 
Mean (sd)
77.3 (17.117)
77.5 (17.150)
 
 
ICC
1.00 (0.99 - 1.00)
Range
44.5-151
44.5-150
 
 
 
 
Weight provided
96.8
96.1
 
 
 
 
Not stated
3.2
3.9
 
 
 
 
BMI (derived)c
 
 
 
 
 
 
Mean (sd)
26.7 (4.918)
27.1 (4.980)
 
 
ICC
0.98 (0.98 - 0.99)
Range
17.1-47.8
18.5-47.5
 
 
 
 
BMI calculated
96.1
95.4
 
 
 
 
Not stated
3.9
4.6
 
 
 
 
Body Mass Index (derived)
 
 
97.9
70.2
Weighted Kappaa
0.93 (0.75 - 1.00)
Underweight (<18.5)
0.7
-
 
 
 
Normal (> = 18.5 & < 25)
43.5
40.4
 
 
 
 
Overweight (> = 25 & <30)
32.0
34.2
 
 
 
 
Obese (> = 30)
23.8
25.3
 
 
 
 
Which best describes your home smoking situation….
96.1
86.0
Kappa
0.59 (0.33 - 0.85)
My home is smoke free (includes smoking is allowed outside)
94.2
94.3
 
 
 
 
People occasionally smoke in the house
3.9
3.8
 
 
 
 
People frequently smoke in the house
1.9
1.9
 
 
 
 
Which of the following describes your smoking status..
84.4
38.2
Kappa
0.75 (0.66 - 0.84)
I smoke daily
8.4
7.8
 
 
 
 
I smoke occasionally
2.6
3.9
 
 
 
 
I don't smoke now but I used to
27.3
29.2
 
 
 
 
I've tried it a few times but never smoked regularly
6.5
6.5
 
 
 
 
I've never smoked
55.2
52.6
 
 
 
 
Smoking status (derived)
 
 
89.0
42.4
Kappa
0.81 (0.72 - 0.89)
Smoker
55.2
52.6
 
 
 
 
Ex -smoker
33.8
35.7
 
 
 
 
Non -smoker
11.0
11.7
 
 
 
 
Alcohol consumption
 
 
 
 
 
 
Number of days a week drink alcohol …
83.0
37.5
Weighted Kappab
0.75 (0.64 - 0.85)
Don't drink alcohol
20.1
25.3
 
 
 
 
Less than once per week
26.0
18.8
 
 
 
 
1
14.9
18.2
 
 
 
 
2
11.7
9.1
 
 
 
 
3
5.8
8.4
 
 
 
 
4
3.2
3.2
 
 
 
 
5
4.5
6.5
 
 
 
 
6
0.6
1.3
 
 
 
 
7
13.0
9.1
 
 
 
 
Number of standard drinks per day when drinking....
ICC
0.75 (0.63 - 0.83)
Mean (sd)
2.5 (2.562)
2.3 (2.013)
 
 
 
 
Range
1-20
1-12
 
 
 
 
Number of drinks provided
100.0
100.0
 
 
 
 
Not stated
-
-
 
 
 
 
Risk to health due to alcohol consumption (short term) (derived)
95.0
85.3
Weighted Kappab
0.66 (0.45 - 0.87
Non- drinker
20.1
25.3
 
 
 
 
Low risk
54.5
51.3
 
 
 
Risky
23.4
20.8
 
 
 
 
High risk
1.9
2.6
 
 
 
 
Serves vegetables per day
ICC
0.64 (0.50 - 0.74)
Mean (sd)
3.0 (1.453)
3.0 (1.600)
 
 
 
 
Range
0.5 - 8.0
0 - 8.0
 
 
 
 
Serves per day provided
100.0
98.7
 
 
 
 
Not stated
-
1.3
 
 
 
 
1 or less serves (derived)
14.3
17.1
93.2
86.2
Weighted Kappaa
0.50 (0.32 - 0.69)
2 to 4 serves
69.5
66.4
 
 
 
5 or more serves
16.2
16.4
 
 
 
 
Serves fruit per day
 
 
 
 
ICC
0.83 (0.77 - 0.88)
Mean (sd)
1.7 (1.034)
1.6 (1.069)
 
 
 
 
Range
0 - 8.0
0 - 8.0
 
 
 
 
Serves per day provided
100.0
100.0
 
 
 
 
Not stated
-
-
 
 
 
 
None to 1 serves (derived)
46.1
54.5
96.0
89.0
Weighted Kappaa
0.60 (0.45 - 0.76)
2 or more serves
53.9
45.5
 
 
 
Total time walking in a week (mins)
ICC
0.47 (0.27 - 0.61)
Mean (sd)
120.4 (163.3)
99.3 (163.1)
 
 
 
 
Range
0-1200
0-1260
 
 
 
 
Minutes/hours per week provided
100.0
97.4
 
 
 
 
Not stated - 2.6        

Note : ICC Intraclass correlation coefficient.

a: weighting system used: 1 (perfect agreement), 0.8 (difference of 1 category) and 0 (difference of 2 to 4 categories).

b: weighting system used: 1 (perfect agreement), 0.9 (difference of 1 category) and 0 (difference of 2 to 8).

c: only calculated for respondents aged 18 years and over (n = 153).