Prior MLSFH-MAC and MLSFH survey rounds available for MLSFH-MAC respondents surveyed in 2018
| Women | Men | Total | |
| Number of MLSFH-MAC study participants in 2018 | 968 | 658 | 1626 |
| Proportion of 2018 MLSFH-MAC respondents with linkage to: | |||
| 2017 MLSFH-MAC survey data | 0.95 | 0.93 | 0.94 |
| 2013 MLSFH-MAC survey data | 0.67 | 0.69 | 0.67 |
| 2012 MLSFH-MAC survey data | 0.65 | 0.69 | 0.67 |
| 2010 MLSFH survey data | 0.98 | 0.99 | 0.99 |
| 2008 MLSFH survey data | 0.99 | 0.99 | 0.99 |
| 2006 MLSFH survey data | 0.68 | 0.76 | 0.71 |
| 2004 MLSFH survey data | 0.63 | 0.69 | 0.66 |
| 2001 MLSFH survey data | 0.65 | 0.59 | 0.62 |
| 1998 MLSFH survey data | 0.58 | 0.60 | 0.59 |
Longitudinal information covering 20 years of their life course (ie, 1998 to 2018) is available for 59% of the 2018 MLSFH-MAC respondents, and 10 years of follow-up—covering the period 2008 to 2018—is available for 99% of MLSFH-MAC respondents. The difference in longitudinal data linkages is explained by the fact that the MLSFH expanded its sample to older respondents in 2008, which implied that a subset of current MLSFH-MAC respondents were enrolled in 2008, with the remaining MLSFH-MAC respondents either having been part of the initial 1998 MLSFH sample or having been enrolled as part of MLSFH sample expansions during 2001 to 2006.2 Because the 2018 MLSFH-MAC sample includes respondents who reached age 45+ years. Only after 2012, only about two-third of the 2018 sample was surveyed at baseline in 2012.
MLSFH-MAC, Mature Adults Cohort of the Malawi Longitudinal Study of Families and Health.