Diffusion Coefficient Estimates, Tipping Points, and 2014 Adoption Rates
| Scenarios | External Diffusion Coefficient (p) | Internal Diffusion Coefficient (q) | p/q Ratio | Tipping Point | 2014 Adoption Percentage |
| Estimate based on 2001–2003 Surveys | 0.0054 | 0.1673 | 0.0323 | 2011 | 61.94% |
| Estimate based on 2001–2007 Surveys | 0.0083 | 0.1038 | 0.0800 | 2014 | 47.33% |









