忠诚度，Walker认为是通过最近消费，消费频率，和产生价值3方面来衡量。

Loyalty, Walker says, is measured in recency, frequency, and value.

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而另一方面，低频率则会导致错过更新的数据。

Low pulling frequency, on the other hand, may lead to missed updates.

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同样，2010年，拉美和加勒比地区社会经济数据库将重点扩大覆盖面，提供劳动力市场调查数据。 劳动力市场调查的频率往往高于入户调查。

Similarly, in 2010, SEDLAC will focus on expanding coverage to provide harmonized data from labor market surveys, which tend to be carried out more frequently than household surveys.

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