The choice of analytical techniques will be driven by the availability of data and type of effect to be analysed. While the research on the contribution of broadband to GDP growth has confirmed its positive impact, it has also yielded results that vary widely. Constrained by data availability, the analyses have primarily focused on OECD countries (generally Western Europe and North America) and states in the United States (see Table 1). However, one observes that such a contribution appears to vary widely, from 0.25 to 1.38 per cent for every increase in 10 per cent of penetration15.