These include SDG 5 (’Achieve gender equality and empower all women and girls’): and also, via the strong association this goal has with many of the other SDGs. By assessing women and girls' health and well-being (SDG 3). The SDG indicators are classified by tier, with the following definitions: Tier 1: indicator is conceptually clear, has an internationally established methodology and standards are available, and data are regularly produced by countries for at least 50 per cent of countries and of the population in every region where the indicator is relevant. However, it is expected that indicators remaining at the Tier 3 classification in 2020will be removed from the SDG monitoring list.