Table 2.
Characteristics of individuals (baseline) and environmental features (Wave 2) for the three analysis samples.
| Measure | Walkability Sample (n = 2260) | Physical Inactivity Norm Sample (n = 1926) | Overweight/Obesity Norm Sample (n = 1907) |
|---|---|---|---|
| Individual-Level Characteristics | Mean (SD) | Mean (SD) | Mean (SD) |
| Age (years) | 50.41 (14.83) | 49.97 (15.22) | 49.87 (15.18) |
| Sex (female) n (%) | 1252 (55.4%) | 1061 (55.1%) | 1051 (55.1%) |
| Current smoker n (%) | 401 (17.7%) | 338 (17.6%) | 335 (17.6%) |
| Married/de facto n (%) | 1476 (65.3%) | 1229 (63.8%) | 1226 (64.3%) |
| Education (university graduate) n (%) | 275 (12.2%) | 250 (13.0%) | 250 (13.1%) |
| Not employed n (%) | 975 (43.1%) | 834 (43.2%) | 815 (42.7%) |
| Physical activity-level 1: | |||
| Sedentary n (%) | 553 (43.9%) | 461 (32.5%) | 454 (32.2%) |
| Some n (%) | 449 (26.7%) | 381 (26.8%) | 381 (27.1%) |
| Meets recommendations n (%) | 677 (40.3%) | 578 (40.7%) | 573 (40.7%) |
| Missing n | 581 | 506 | 499 |
| HbA1c 2 | 5.41 (0.45) | 5.43 (0.45) | 5.43 (0.45) |
| Environmental Features | Mean (SD) | Mean (SD) | Mean (SD) |
| 1600 m buffer area (km2) 3 | 3.88 (3.21–4.81) | 3.91 (3.31–4.83) | 3.91 (3.30–4.84) |
| Walkability | 22.42 (7.45) | - | - |
| Physical inactivity norm | - | 52.76 (7.08) | - |
| SAMSS n per buffer | - | 99.4 (32.7) | - |
| Overweight/obesity norm | - | - | 62.85 (6.18) |
| SAMSS n per buffer | - | - | 95.6 (31.5) |
| Area-level income (median weekly household income) | 842 (152.78) | 835.63 (132.93) | 838.45 (131.64) |
1 physical activity (PA) data less than sample size, proportion expressed using PA sample as denominator; 2 3 NWAHS participants did not have baseline HbA1c data but did have HbA1c data for least one other wave (i.e., sample size reported on is 3 less than in the header); 3 median and inter quartile range (IQR) reported. SAMSS: South Australian Monitoring and Surveillance System.