Table 2 Comparison of participants, those respondents who refused but allowed an informant interview, and those who refused all participation at Wave 2: Means (and SDs) or percentages
From: Predictors of refusal to participate: a longitudinal health survey of the elderly in Australia
Wave 1 variables | Participants n = 560–638 | Refused but informant interview n = 22–36 | Refused all Participation N = 60–78 | P-value |
|---|---|---|---|---|
Age at Wave 1 | 76.5 (4.9) | 77.9 (5.4) | 75.9 (4.0) | .123 |
Sex (% male) | 48.58 | 44.44 | 42.31 | .532 |
Years of education | 11.45 (2.64) | 10.82 (1.95) | 10.56 (2.28) | .009 |
Occupational status (% white collar) | 65.78 | 48.57 | 42.86 | .000 |
Lives alone (%) * | 35.78 | 31.25 | 49.30 | .066 |
NART | 113.23 (9.05) | 103.23 (11.51) | 105.78 (10.89) | .000 |
MMSE | 27.69 (2.30) | 23.10 (5.49) | 26.14 (4.48) | .000 |
DSM-III dementia (%) | 4.7 | 34.6 | 13.5 | .000 |
ADL | 1.75 (2.51) | 3.73 (4.56) | 1.37 (1.56) | .000 |
Chronic illness | 2.94 (1.92) | 2.94 (2.16) | 2.67 (1.60) | .498 |
Sight problems | 0.88 (1.88) | 2.03 (3.87) | 0.92 (1.97) | .005 |
Hearing problems | 1.99 (2.45) | 2.87 (3.11) | 2.14 (2.66) | .150 |
Anxiety | 2.41 (2.23) | 2.18 (2.58) | 2.84 (2.63) | .269 |
Depression | 1.89 (1.88) | 2.52 (2.38) | 2.14 (2.15) | .153 |
Extroversion | 5.89 (3.23) | 5.95 (3.14) | 6.47 (3.11) | .413 |
Neuroticism | 3.04 (2.80) | 4.05 (3.29) | 3.28 (2.71) | .223 |
Distressed by interview (%) | 4.01 | 9.68 | 10.96 | .016 |