Table 7:

Summation scale of SHS knowledge.

Summation score	Frequency	Percent
0	5	2.5
1	5	2.5
2	5	2.5
3	19	9.5
4	32	16
5	25	12.5
6	33	16.5
7	33	16.5
8	28	14
9	11	5.5
10

Summation of SHS knowledge scale from 0 (low) −10 (high).