Natsal-1
Natsal-1 interviewed 18,876 people aged 16-59 between 1990 and 1991
Natsal-2
Natsal-2 interviewed 12,110 adults aged 16-44 between 1999 and 2001
Natsal-3
Natsal-3 fieldwork, involved interviews with 15,162 adults aged 16-74 years between September 2010 and August 2012
Natsal-4
Natsal-4 will interview over 9,000 people aged 16-59, fieldwork for which will now start in summer 2022 due to COVID-19
Natsal-1 interviewed 18,1876 adults aged 16-59 between 1990 and 1991
Natsal-2 interviewed 12,110 adults aged 16-44 between 1999 and 2001
Natsal-3 fieldwork, involved interviews with 15,162 adults aged 16-74 years between September 2010 and August 2012
Natsal-4 will interview over 9,000 people aged 16-59, fieldwork for which will now start in summer 2022 due to COVID-19