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Table 2 Associations between baseline demographic, clinical, psychosocial and behavioural variables with change in PAEE (kj/min) over one year in the ProActive trial cohort, n = 321
| Baseline variable | PAEE (kj/min) unstandardised b-coefficient (95% CI)a | P-value |
|---|---|---|
| Demographic | ||
| Age (years) | -0.043 (-0.114 to 0.028) | 0.233 |
| Sex (female = 0; male = 1) | 2.181 (1.286 to 3.075) | < 0.001 |
| Social class (based on the IMDb score 1-5; 5 representing highest social class) | 0.283 (-0.204 to 0.771) | 0.254 |
| Clinical | ||
| BMI (kg/m2) | 0.019 (-0.068 to 0.105) | 0.675 |
| Systolic blood pressure (mm Hg) | 0.000 (-0.032 to 0.031) | 0.983 |
| Diastolic blood pressure (mm Hg) | -0.016 (-0.060 to 0.029) | 0.483 |
| HbA1c (%) | -0.146 (-0.993 to 0.702) | 0.736 |
| Total cholesterol (mmol/l) | -0.204 (-0.633 to 0.225) | 0.350 |
| VO2max (l/min) | 1.138 (0.644 to 1.631) | < 0.001 |
| Psychosocial | ||
| Perceived behavioural control (1 to 5)c | -0.086 (-0.795 to 0.623) | 0.812 |
| Intention (1 to 5)c | 0.281(-0.390 to 0.953) | 0.410 |
| Current health status (scale 0-100, where 0 = worst imaginable health to 100 = best imaginable health state) | -0.019 (-0.047 to 0.008) | 0.171 |
| Anxiety score (Spielberger) | 0.012 (-0.023 to 0.047) | 0.494 |
| SF-36 physical functioning score | -0.018 (-0.047 to 0.010) | 0.208 |
| SF-36 mental health score | -0.016 (-0.043 to 0.012) | 0.275 |
| Behavioural | ||
| PAEE (kj/min)d | 0.599 (0.506 to 0.691) | < 0.001 |
| Self-reported physical activity index (met hours/week) | 0.008 (0.000 to 0.016) | 0.055 |
| Self-reported alcohol (total units/wk) | 0.059 (0.009 to 0.109) | 0.022 |
| Self-reported smoking status (0 = never/ex; 1 = current) | 1.064 (-0.098 to 2.225) | 0.072 |
