Table 2.

Comparison of mean unstimulated and stimulated salivary flow rates according to age groups

Age group (years)	n	Mean unstimulated salivary flow rate (ml/min)	Mean stimulated salivary flow rate (ml/min)	t	P
20-29	42	1.313±0.078	1.439±0.089	6.9001	0.0001*
30-39	48	1.344±0.075	1.397±0.087	3.1967	0.0019*
40-49	40	1.294±0.069	1.375±0.071	5.1744	0.0001*
Total	130	1.330±0.054	1.438±0.072	17.4827	0.0001*

*P<0.001 - highly significant