| Characteristic | Very frequent usage | Frequent usage |
|---|---|---|
| - | - | - |
| - | - | - |
| - | - | - |
| - | - | - |
| - | - | - |
| - | - | - |
| - | - | - |
| - | - | - |
| - | - | - |
| - | - | - |
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Source
Release date
October 2011
Region
China
Survey time period
August 2011
Supplementary notes
According to the source, the data was collected via questionnaires, asking 1,189 people.
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