Table 2.
Descriptive statistics for the sample by measurement occasion.
| Q1 (1984) | Q2 (1987) | IPT2 (1989–91) | Q3 (1990) | IPT3 (1992–4) | Q4 (1993) | |
|---|---|---|---|---|---|---|
| Female N (%) | 661 (58.1%) | 670 (59.3%) | 284 (59.5%) | 594 (59.1%) | 267 (61.5%) | 540 (59.5%) |
| Male N (%) | 477 (41.9%) | 460 (40.7%) | 193 (40.5%) | 411 (40.9%) | 167 (38.5%) | 367 (40.5%) |
| Mean age (SD), range | 65.9 (8.6) 50.1 – 91.9 |
68.5 (8.6) 50.7 – 95.8 |
68.5 (6.9) 55.0 – 91.0 |
70.1 (7.7) 50.8 – 92.5 |
71.8 (6.9) 58.0 – 89.3 |
72.1 (7.7) 50.0 – 93.2 |
| Anxiety M (SD) | 19.1 (8.0) | 18.1 (7.7) | 17.9 (7.3) | 18.9 (7.7) | 17.6 (7.2) | 18.9 (7.5) |
| Correlations Between Anxiety Scores by Occasion (men: above diagonal; women: below diagonal): | ||||||
| Q1 | -- | .52 | .64 | .51 | .38 | .44 |
| Q2 | .61 | -- | .61 | .64 | .61 | .63 |
| IPT2 | .47 | .58 | -- | .68 | .63 | .54 |
| Q3 | .47 | .62 | .63 | -- | .68 | .59 |
| IPT3 | .44 | .53 | .55 | .57 | -- | .62 |
| Q4 | .46 | .59 | .54 | .55 | .50 | -- |
Note: Q = questionnaire component of a data collection wave; IPT = in-person testing component of a data collection wave. Illness represents the number of organ systems reported to be affected by a physical illness at Q1. For each person, the date of each measurement occasion was used to organize observations chronologically for longitudinal analysis. The sex ratios and mean ages in the table represent a composite of longitudinal participants who began the study at Q1 and additional participants who joined in successive waves. Anxiety was higher in women than men at each occasion, t = 3.07 to 5.44. All correlations had p ≤.0001 (N ranged from 149 to 661 for each pair of variables).