Table 2 presents the results of the regression analysis for change in overall physical activity according to greenspace in the home neighbourhood, adjusted for baseline physical activity. After adjustment for baseline physical activity, participants living in the greenest areas experienced a slower decline in overall physical activity, with a difference of 5.6 MET h/wk compared to those living in the least green (Model 1). Higher baseline physical activity was associated with a greater mean difference in physical activity change. The trend across greenspace quartiles was highly statistically significant with the greenest areas being most protective of decline (P<0.001). When adjusted for additional significant covariates of age, sex, BMI, social class and marital status (Model 2), living in the greenest home neighbourhoods at baseline was protective against decline, with these participants showing a difference in overall physical activity of 4.2 MET h/wk (trend P=0.001) from those in the least green neighbourhoods. The adjusted R-squared values indicated that the fully adjusted model explained just over a quarter (26.5%) of the variance in change in overall physical activity.Table 2Regression models for change in overall physical activity between baseline and follow-up, according to quartile of greenspace.Table 2.Model 1 Adjusted for baseline PA (n=10997, adjusted R2 19.4%)Model 2 Adjusted for baseline PA, age, sex, BMI, social class and marital status (n=10785, adjusted R2 26.5%)95% CI95% CICoeff.LowerUpperPP trendCoeff.LowerUpperPP trendQuartile of greenspace: quartile 1 (least green, ref)1.00<0.0011.000.001 quartile 21.19−1.493.870.3841.51−1.074.090.251 quartile 34.011.336.690.0033.070.485.660.020 quartile 4 (most green)5.562.888.24<0.0014.211.606.810.002Baseline PA (MET h/wk)−0.46−0.48−0.44<0.001−0.58−0.60−0.56<0.001Age at 2HC (years)−1.84−1.96−1.72<0.001Sex (ref=female)−3.51−5.39−1.64<0.001BMI (kg/m2)−0.48−0.71−0.24<0.001Social class (ref=non-manual)1.16−0.763.070.236Marital status (ref=not married)3.961.516.410.002Constant37.7535.0040.50<0.001174.49164.09184.88<0.001