Characteristics of the 1995, 1998, 2003, 2008 and 2009 Scottish Health Surveys: interview samples restricted to 25–64-year old respondents (unweighted data)
| Scottish Health Survey | |||||
| 1995 | 1998 | 2003 | 2008 | 2009 | |
| Sample size, n | 6910 | 6656 | 5497 | 4202 | 4964 |
| Mean age (SD) | 43.3 (11.6) | 43.8 (11.3) | 45.3 (10.9) | 46.0 (11.0) | 45.6 (11.0) |
| Gender, n (%) | |||||
| Male | 3049 (44.1) | 2969 (44.6) | 2437 (44.3) | 1839 (43.8) | 2136 (43.0) |
| Female | 3861 (55.9) | 3687 (55.4) | 3060 (55.7) | 2363 (56.2) | 2828 (57.0) |
| Ethnicity, n (%) | |||||
| White | 6852 (99.2) | 6571 (98.7) | 5357 (97.5) | 4066 (96.8) | 4819 (97.1) |
| Other | 55 (0.8) | 70 (1.1) | 103 (1.9) | 117 (2.8) | 112 (2.3) |
| Missing | 3 (0.0) | 15 (0.2) | 37 (0.7) | 19 (0.5) | 33 (0.7) |
| BMI, n (%) | |||||
| <30 kg/m2 | 5158 (74.6) | 4691 (70.5) | 3447 (62.7) | 2519 (59.9) | 2949 (59.4) |
| ≥30 kg/m2, obese | 1218 (17.6) | 1359 (20.4) | 1207 (22.0) | 1090 (25.9) | 1270 (25.6) |
| Missing* | 534 (7.7) | 606 (9.1) | 843 (15.3) | 593 (14.1) | 745 (15.0) |
| Social class, n (%) | |||||
| I, professional | 297 (4.3) | 280 (4.2) | 316 (5.7) | 225 (5.4) | 277 (5.6) |
| II, managerial | 1644 (23.8) | 1696 (25.5) | 1646 (29.9) | 1232 (29.3) | 1670 (33.6) |
| IIINM, skilled non-manual | 1534 (22.2) | 1404 (21.1) | 1125 (20.5) | 889 (21.2) | 1011 (20.4) |
| IIIM, skilled manual | 1424 (20.6) | 1348 (20.3) | 984 (17.9) | 773 (18.4) | 839 (16.9) |
| IV, semi-skilled manual | 1111 (16.1) | 1177 (17.7) | 939 (17.1) | 703 (16.7) | 794 (16.0) |
| V, unskilled manual | 575 (8.3) | 468 (7.0) | 320 (5.8) | 253 (6.0) | 252 (5.1) |
| Other (armed forces, unknown) | 325 (4.7) | 283 (4.3) | 167 (3.0) | 127 (3.0) | 121 (2.4) |
| Education, n (%) | |||||
| Level, 3 degree level or above | 1793 (25.9) | 1727 (25.9) | 1482 (27.0) | 1177 (28.0) | 1458 (29.4) |
| Level, 2 intermediate | 1043 (15.1) | 1209 (18.2) | 1070 (19.5) | 1046 (24.9) | 1265 (25.5) |
| Level 1, end of compulsory schooling | 1839 (26.6) | 1723 (25.9) | 1641 (29.9) | 1156 (27.5) | 1337 (26.9) |
| No qualifications | 2226 (32.2) | 1978 (29.7) | 1274 (23.2) | 802 (19.1) | 888 (17.9) |
| Other qualifications or missing | 9 (0.1) | 19 (0.3) | 30 (0.5) | 21 (0.5) | 16 (0.3) |
| Nurse sample size selected, n | 6910 | 6656 | 5497 | 1193 | 1255 |
| Declined nurse | 306 (4.4) | 387 (5.8) | 867 (15.8) | 278 (23.3) | 275 (21.9) |
| Agreed to nurse visit but not completed | 525 (7.6) | 752 (11.3) | 913 (16.6) | 195 (16.3) | 218 (17.4) |
| Agreed to nurse visit and completed | 6079 (88.0) | 5517 (82.9) | 3717 (67.6) | 720 (60.4) | 762 (60.7) |
↵* Missing for body mass index (BMI) included pregnant women.