Table 1

Descriptive statistics of variables (adjusted for missing observations)
Variables Observations Mean(SD) /%
Dependent variable (HRQoL)
EQ-5D 5453 0.86 (0.23)
Missing 84 1.5
Independent variables (PA)
Walking
Active 873 15.8
Inactive 4664 84.2
Sports and exercise
Active 660 11.9
Inactive 4877 88.1
Objective measurement*
Active 102 11.5
Inactive 783 88.5
Missing 4652 84
Subjective measurement**
Active 2452 44.4
Inactive 3067 55.6
Missing 18 0.3
Independent variables (covariates)
Age 5537 50(6.2)
Gender
Male 2519 45.5
Female 3018 54.5
Marital status
Other 30 0.5
Married (living with partner) 3618 65.3
Single 735 13.3
Separated 208 3.8
Divorced 816 14.7
Widowed 135 2.4
Income 4535 35591.2 (29210)
Missing 1002 18.1
Income (missing observations imputed for) 5537 35008.3 (26987.7)
Drink alcohol
Yes 4702 84.9
No 823 14.9
Missing 12 0.2
Smokers
Yes 1206 21.8
No 1926 34.8
Missing 2405 43.4
BMI
Underweight (under 18.5) 30 0.5
Normal (18.5 – 25) 1487 26.9
Overweight (25 – 30) 1885 34
Obese (30+) 1418 25.6
Missing 717 13
Ethnicity
White 5029 90.8
Mixed 44 0.8
Asian 260 4.7
Black 140 2.5
Chinese 28 0.5
Other 17 0.3
Missing 19 0.3
Education
Nvq4/nvq5/degree or equivalent 1228 22.2
Higher education below degree 746 13.5
Nvq3/GCE ‘A’ level equivalent 749 13.5
Nvq2/GCE ‘O’ level equivalent 1404 25.4
Nvq1/CSE other grade equivalent 239 4.5
Foreign/other 53 1.0
No qualification 1102 19.9
Missing 16 0.3
Employment status
Employed 4215 76.1
Unemployed 163 2.9
Retired 259 4.7
Other economically inactive 884 16
Missing 16 0.3

*The distribution of objective measurement (missing observations imputed for) is: active (111;2%) inactive(5426;98%) ** The distribution of subjective measurement (missing observations imputed for) is: active (2465; 44.5%) inactive (3072; 55.5%). If restricted to observations with values for objective measurement, the distribution of subjective measurement (missing observations imputed for) is: active (408; 46.1%) inactive (477; 53.9%).

Anokye et al.

Anokye et al. BMC Public Health 2012 12:624   doi:10.1186/1471-2458-12-624

Open Data