Table 1.
Year | Nationwide (%) | Eastern (%) | Middle (%) | Western (%) | P | ||||
---|---|---|---|---|---|---|---|---|---|
Availability | Product specific Δ availability | Availability | Product specific Δ availability | Availability | Product specific Δ availability | Availability | Product specific Δ availability | ||
2011 | 46.0 | 55.4 | 41.4 | 44.9 | 0.000 | ||||
2012 | 53.7 | 3.6* | 60.1 | 4.7* | 44.5 | 5.1* | 47.3 | 3.5* | 0.000 |
2013 | 48.4 | −3.8* | 58.1 | −1.4* | 41.8 | −4.9* | 42.5 | −3.2* | 0.000 |
2014 | 43.3 | −2.7* | 49.0 | −4.5* | 38.4 | −4.5* | 38.3 | −1.4* | 0.000 |
2015 | 50.5 | 4.6* | 60.1 | 3.2* | 47.7 | 5.6* | 49.8 | 7.7* | 0.000 |
2016 | 43.7 | −5.2* | 54.0 | −5.6* | 40.5 | −3.6* | 42.2 | −6.8* | 0.000 |
*P < 0.05
Product specific Δ availability: first calculated the differences of availability of each product between adjacent years and then chose the median value of these differences as Product specific Δ availability