Comparison of number of units purchased in each treatment group between 2008 and 2009.

*Increase in the number of units purchased.‡Decrease in the number of units purchased.†Oral supplements were excluded from analysis as they were only available in pharmacy from last quarter of 2008.* 购买单位数量的增加。‡ 购买单位数量的减少。† 口服补充剂仅自2008年第四季度起可在药房购得，故将其排除在本次分析之外。