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Table 1 Number (%) of respondents by year 2 characteristics and year 10 status. Missing data excluded.

From: An investigation of whether factors associated with short-term attrition change or persist over ten years: data from the Medical Research Council Cognitive Function and Ageing Study (MRC CFAS)

Group: Year 10 status Interviewed† Refused Moved Died
Total   3120   1373   342   3992  
Centre Cambridgeshire 644 (21) 247 (18) 61 (18) 768 (19)
  Gwynedd 698 (22) 306 (22) 51 (15) 648 (16)
  Newcastle 575 (18) 232 (17) 66 (19) 834 (21)
  Nottingham 511 (16) 291 (21) 54 (16) 877 (22)
  Oxford 692 (22) 297 (22) 110 (32) 865 (22)
Women   1,887 (60) 900 (66) 233 (68) 2,211 (55)
[Age [Median (Interquartile range(IQR))] 71 (68–75) 72 (69–77) 72 (68–78) 78 (72–83)
Married/cohabiting 1,825 (59) 776 (57) 187 (55) 1,712 (43)
Residential/nursing home 15 () 24 (2) 5 (1) 410 (10)
Social class IV/V 492 (16) 275 (21) 33 (10) 759 (20)
Years of education <=9 1,711 (55) 855 (63) 182 (54) 2,532 (65)
Ever smoked 2,030 (65) 832 (61) 207 (61) 2,641 (68)
MMSE < 18 17 (1) 36 (3) 6 (2) 393 (10)
MMSE [Median (IQR)] 28 (26–29) 27 (24–28) 27 (24–28) 26 (22–28)
Townsend ADL 11+ 130 (4) 98 (7) 317 (6) 2,672 (25)
ADL [Median (IQR)] 1 (0–3) 1 (0–4) 1 (0–3) 4 (1–11)
Fair/Poor self perceived health 620 (20) 353 (27) 62 (19) 1,392 (39)
Sight or hearing problem 583 (19) 280 (20) 80 (23) 1,277 (32)
Screening AGECAT O3+ 26 (1) 47 (3) 6 (2) 516 (13)
Self reported depression 357 (12) 160 (12) 41 (12) 390 (11)
Chronic disease‡ 1,894 (61) 847 (63) 211 (63) 2,818 (74)
Dementia prevalence 1 (0.5–2.1) 3.5 (1.8–6.6) 3.0 (0.9–9.5) 15.6 (13.6–18.6)
Depression prevalence 7 (0.5–10.0) 8.0 (0.5–11.9) 9.2 (4.1–19.1) 12.2 (10.0–15.0)
Family history of dementia 500 (16) 165 (12) 53 (16) 445 (12)
Disability No ADL-IADL disability 2,491 (81) 986 (74) 261 (77) 1,770 (47)
  IADL disability only 432 (14) 219 (16) 56 (17) 768 (20)
  ADL disability 163 (5) 134 (10) 20 (6) 1,222 (33)
Alcohol Don't drink 280 (10) 147 (12) 19 (6) 435 (12)
  Drink, not to excess 2,013 (71) 852 (69) 226 (74) 2,267 (65)
  Drink, excessive drinking 531 (19) 238 (19) 59 (19) 793 (23)
Cardiovascular diseases*         
  None 1,751 (57) 721 (54) 204 (60) 1,658 (45)
  One 919 (30) 391 (29) 86 (25) 1,217 (33)
  Two or more 426 (14) 215 (16) 48 (14) 800 (22)
Stroke   140 (5) 79 (6) 15 (4) 499 (14)
  1. There are 25 individuals who were interviewed at wave 4 who did not have wave 2 interviews i.e. Parkinson's disease, angina, heart attack, stroke or arthritis. * i.e. Heart attack, hypertension – medication taken, angina, intermittent claudication