sentence: 39 The instrument can further be divided into six subscales : 1 ) GWBS – general health : items 10 , 15 ; possible range : 0 – 15 ; 2 ) GWBS – anxiety : items 2 , 5 , 8, 16 ; possible range : 0 – 25 ; 3 ) GWBS – depression : items 4 , 12 , 18 ; possible range : 0 – 20 ; 4 ) GWBS – positive well-being : items 1 , 6 , 11 ; possible range : 0 – 15 ; 5 ) GWBS – self-control : items 3 , 7 , 13 ; possible range : 0 – 15 ; and 6 ) GWBS – vitality : items 9 , 14 , 17 ; possible range : 0 – 20 .