Table 1.
Demographic characteristics of invited, non-respondent and respondent samples
| Invited Sample (n = 384) | Non-respondent sample (n = 275) | Respondent Sample (n = 109) | |
|---|---|---|---|
| Age range | 33 – 91 years | 33–91 years | Min 38 – 84 years |
| Mean age (SD) | 63 years (SD 11.9) | 63 year (SD 11.1) | 64 years (SD 10.3) |
| Sex: Male | n = 177 (46 %) | n = 127 (46.2) | n = 50 (45.9 %) |
| Female | n = 207 (54 %) | n = 148 (53.8) | n = 59 (54.1 %) |
| Deprivation ranka: | |||
| Quartile 1 (most deprived) | 157 (40.9 %) | 120 (43.6 %) | 37 (34.0 %) |
| Quartile 2 | 54 (14.1 %) | 37 (13.5 %) | 17 (15.6 %) |
| Quartile 3 | 77 (20.2 %) | 57 (20.7 %) | 20 (18.4 %) |
| Quartile 4 (least deprived) | 96 (25.0 %) | 61 (22.2 %) | 35 (32.1 %) |
| High blood pressure | Not known | Not known | 76 (69.7 %) |
| Angina | Not known | Not known | 22 (20.2 %) |
| Myocardial infarction | Not known | Not known | 12 (11.0 %) |
| Stroke | Not known | Not known | 8 (7.3 %) |
| Diabetes mellitus | Not known | Not known | 17 (15.6 %) |
| No cardiovascular morbidity | Not known | Not known | 22 (20.2 %) |
| Current smoker | Not known | Not known | 24 (22.0 %) |
| Ex-smoker | Not known | Not known | 29 (26.6 %) |
aDeprivation rank (grouped in quartiles) based on Northern Ireland Multiple Deprivation Index, linked to address postcode (Northern Ireland Multiple Deprivation Measure 2010, Northern Ireland Statistics and Research Agency, http://www.nisra.gov.uk/deprivation/nimdm_2010)