What it measures The survey covers a broad range of topics including education, exercise, health, social care, use of the internet, community cohesion, wellbeing, employment, and finances.
Mae'r arolwg yn cwmpasu ystod eang o bynciau gan gynnwys addysg, ymarfer corff, iechyd, gofal cymdeithasol, defnyddio'r rhyngrwyd, cydlyniant cymunedol, llesiant, cyflogaeth a chyllid.