Factors associated with giving consent to link questionnaire with primary care records
| Variables* | Consent given N = 1565 n (%) | Consent not given N = 139 n (%) | Odds ratio for consent given (95% CI) |
|---|---|---|---|
| *All questionnaire measures are fully referenced in our previous paper.6 †There were a small number of people from ethnic groups other than white, so these have been grouped together. ‡Alcohol use: frequent = daily use; occasional = weekly or monthly use; never = not at all. §Household income used for practice 1 only, question removed because of negative comments and missing values.6 | |||
| A: Demographic factors: | |||
| Age (n = 1704) | |||
| 65–69 | 356 (92.7) | 28 (7.3) | 1.0 |
| 70–79 | 711 (92.1) | 61 (7.9) | 0.9 (0.6 to 1.5) |
| 80 or more | 498 (90.9) | 50 (9.1) | 0.8 (0.5 to 1.3) |
| Sex (n = 1704) | |||
| Male | 585 (93.0) | 44 (7.0) | 1.0 |
| Female | 980 (91.2) | 95 (8.8) | 0.8 (0.5 to 1.1) |
| Ethnic group† (n = 1677) | |||
| White | 1492 (92.2) | 126 (7.8) | 1.0 |
| Non-white | 54 (91.5) | 5 (8.5) | 0.9 (0.4 to 2.3) |
| Practice (n = 1704) | |||
| Practice 1 (inner city) | 644 (93.1) | 48 (6.9) | 1.0 |
| Practice 2 (suburban) | 921 (91.0) | 91 (9.0) | 0.8 (0.5 to 1.1) |
| B: Physical health | |||
| Limiting longstanding illness (n = 1704) | |||
| No | 860 (89.6) | 100 (10.4) | 1 |
| Yes | 705 (94.8) | 39 (5.2) | 2.1 (1.4 to 3.1) |
| Pain interferes with activities (n = 1610) | |||
| Not at all | 665 (90.4) | 71 (9.7) | 1.0 |
| A little bit | 358 (93.0) | 27 (7.0) | 1.4 (0.9 to 2.3) |
| Moderately/extremely | 460 (94.1) | 29 (5.9) | 1.7 (1.1 to 2.7) |
| Disability score (n = 1624) | |||
| 0–5 none or mild disability | 1016 (91.0) | 100 (9.0) | 1.0 |
| 6–18 moderate or severe disability | 481 (94.7) | 27 (5.3) | 1.8 (1.1 to 2.7) |
| Number of doctor diagnosed conditions (n = 1704) | |||
| 0 | 314 (88.5) | 41 (11.6) | 1.0 |
| 1–2 | 933 (91.6) | 86 (8.4) | 1.4 (1.0 to 2.1) |
| 3 or more | 318 (96.4) | 12 (3.6) | 3.5 (1.8 to 6.7) |
| C: Psychological factors/health behaviours | |||
| Geriatric depression scale (GDS15) (n = 1602) | |||
| 0–5 low | 1120 (91.7) | 101 (8.3) | 1.0 |
| 6–15 high | 362 (95.0) | 19 (5.0) | 1.7 (1.0 to 2.8) |
| FEAR anxiety scale (n = 1613) | |||
| Low 0–1 | 1132 (91.5) | 105 (8.5) | 1.0 |
| High 2–4 | 357 (95.0) | 19 (5.1) | 1.7 (1.1 to 2.9) |
| Health locus of control | |||
| Internality (n = 1613) | |||
| Low | 454 (92.7) | 36 (7.4) | 1.0 |
| High | 1035 (92.2) | 88 (7.8) | 0.9 (0.6 to 1.4) |
| Powerful others (n = 1594) | |||
| Low | 1101 (91.8) | 98 (8.2) | 1.0 |
| High | 371 (93.9) | 24 (6.1) | 1.4 (0.9 to 2.2) |
| Chance (n = 1603) | |||
| Low | 460 (91.1) | 45 (8.9) | 1.0 |
| High | 1018 (92.7) | 80 (7.3) | 1.2 (0.9 to 1.8) |
| Current smoking status (n = 1658) | |||
| Non-smoker | 1296 (92.1) | 112 (8.0) | 1.0 |
| Smoker | 234 (93.6) | 16 (6.4) | 1.3 (0.7 to 2.2) |
| Frequency of alcohol intake‡ (n = 1628) | |||
| Frequent | 457 (93.8) | 30 (6.2) | 1.0 |
| Occasional | 696 (91.3) | 66 (8.7) | 0.7 (0.4 to 1.1) |
| Never | 349 (92.1) | 30 (7.9) | 0.8 (0.5 to 1.3) |
| D: Social networks and support | |||
| Marital status (n = 1589) | |||
| Married/cohabiting | 603 (92.1) | 52 (7.9) | 1.0 |
| Widowed | 549 (91.5) | 51 (8.5) | 0.9 (0.6 to 1.4) |
| Divorced/separated | 143 (94.1) | 9 (5.9) | 1.4 (0.7 to 2.8) |
| Single | 168 (92.3) | 14 (7.7) | 1.0 (0.6 to 1.9) |
| See relatives as much as would like (n = 1597) | |||
| Yes | 967 (93.0) | 73 (7.0) | 1.0 |
| No | 514 (92.3) | 43 (7.7) | 0.9 (0.6 to 1.4) |
| See friends as much as would like (n = 1590) | |||
| Yes | 1119 (92.2) | 95 (7.8) | 1.0 |
| No | 355 (94.4) | 21 (5.6) | 1.4 (0.9 to 2.3) |
| Have a confidante (n = 1650) | |||
| Yes | 1315 (92.6) | 105 (7.4) | 1.0 |
| No | 209 (90.9) | 21 (9.1) | 0.8 (0.5 to 1.3) |
| Loneliness (n = 1658) | |||
| Never | 808 (92.6) | 65 (7.5) | 1.0 |
| Sometimes | 597 (92.7) | 47 (7.3) | 1.0 (0.7 to 1.5) |
| All the time/often | 131 (92.9) | 10 (7.1) | 1.1 (0.5 to 2.1) |
| E: Socioeconomic factors: | |||
| Own home (n = 1460) | |||
| No | 469 (91.4) | 44 (8.6) | 1.0 |
| Yes | 874 (92.3) | 73 (7.7) | 1.1 (0.8 to 1.7) |
| Car availability (n = 1520) | |||
| No | 677 (89.7) | 78 (10.3) | 1.0 |
| Yes | 719 (94.0) | 46 (6.0) | 1.8 (1.2 to 2.6) |
| Social class (n = 1456) | |||
| Manual | 523 (93.1) | 39 (6.9) | 1.0 |
| Non-manual | 835 (93.4) | 59 (6.6) | 1.1 (0.7 to 1.6) |
| Occupational pension (n = 1536) | |||
| No | 538 (91.5) | 50 (8.5) | 1.0 |
| Yes | 890 (93.9) | 58 (6.1) | 1.4 (1.0 to 2.1) |
| Private health insurance (n = 1647) | |||
| No | 1343 (91.9) | 119 (8.1) | 1.0 |
| Yes | 176 (95.1) | 9 (4.9) | 1.7 (0.9 to 3.5) |
| Household income§ (n = 479) | |||
| <£120 pw | 179 (95.7) | 8 (4.3) | 1.0 |
| £120pw | 288 (98.6) | 4 (1.4) | 3.2 (1.0 to 10.8) |