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Example 1

Questionnaire: Lifestyle and Health of Mother (ALSPAC) question G2d

 

The response to ‘how long ago?’ is entered as a duration. The time period is for a specific event (stopped smoking), the period queried is continuous and the time period is sufficiently described (years and months).

 

Example 2

Questionnaire: 1980 Parental Interview (BCS) question A8b

Response to ‘How long did this situation last?’ is entered as a duration. The time period is for a specific event (living with only one parent figure), the period queried is continuous and the time period is sufficiently described (years and months).

 

Example 3

Questionnaire: 1980 Parental Interview (BCS) question C2b

Response to ‘Length of time since father/mother last in paid job’ is entered as a duration. The time period is for a specific event (not currently in paid job), the period queried is continuous and the time period is sufficiently described (years and months).


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