Table 1.

Total numbers of sample size and average age (years).

Result Brush	Sample Size and Average Age (Years)
	Male	Female	Total
Positive	63	26	89
	59.3	67.7	61.7
Suspicious	23	33	56
	67.9	66.9	67.3
Doubtful	65	85	150
	60.3	69.0	65.3
Negative	457	600	1057
	58.5	62.4	60.7
Total	608	744	1352
	59.1	63.5	61.6