A download will become available as soon as the article has been published.
A.1 Natural policy experiments and their impact on health inequalities: a guide for evaluation. Whitehead et al.
A.2 Assessing the health inequalities impact of Natural Policy Experiments: how to apply the most commonly used analytical methods? Hu et al.
A.4 Spearhead Revisited: Investigating the impact of the English health inequalities strategy; a difference-in-differences, propensity matched control study. Barr et al. 2015.
A.5 Did the English strategy reduce health inequalities? A difference-in-difference-in- difference analysis comparing England with three other European countries. Hu et al.