Table 1.
Baseline characteristics of subjects in the intervention and control groups, n (%) unless otherwise stated.
| Characteristics | Intervention group (n = 1251) | Control group (n = 1266) |
|---|---|---|
| Mean (SD) age in years | 74.4 (5.4) | 74.7 (5.8) |
| Male | 519 (41) | 556 (44) |
| Married | 984 (79) | 928 (73) |
| Primary Education or below | 955 (76) | 928 (73) |
| More than 1 chronic disease | 412 (33) | 375 (30) |
| Current smoker | 77 (6) | 59 (5) |
| Current drinker | 90 (7) | 71 (6) |
| Exercise in the past 30 days | 982 (79) | 1027 (81) |
| Perceived good health in the past month | 991 (79) | 1013 (80) |
| Prior vaccination other than PPV | 610 (49) | 550 (43) |
| Awareness of PPV | 266 (21) | 314 (25) |
| Mean (SD) perceived stress (range: 0–4, higher score indicates higher stress)a | 1.26 (0.77) | 1.19 (0.78) |
| Mean (SD) self-efficacy in controlling disease (range: 0–4, higher score indicates better control)b | 2.50 (0.76) | 2.57 (0.81) |
PPV, pneumococcal polysaccharide vaccine.
a
11 subjects in the intervention group and 13 subjects in the control group did not complete the scale and were excluded from the analysis.
b
9 subjects in the intervention group and 8 subjects in the control group did not complete the scale and were excluded from the analysis.