Table 3: A linear regression of the influence of age on observed electrolyte concentrations in tear and serum.
|
|
F- Value |
R- Squared |
t-Value |
P-value |
|
Age & Na+ T_C |
0.350 |
0.080 |
52.716 |
0.586 |
|
Age &K+T_C |
0.016 |
0.004 |
33.838 |
0.906 |
|
Age &Cl- T_C |
0.670 |
0.144 |
26.467 |
0.459 |
|
Age & Na+ S_C |
2.183 |
0.353 |
47.800 |
0.214 |
|
Age & K+ S_C |
5.325 |
0.571 |
26.404 |
0.082 |
|
Age &Cl-S_C |
0.71 |
0.017 |
88.900 |
0.803 |
The table shows that potassium concentration in tears had a relatively good fit (R2 = 0.571) in predicting a lower tear potassium concentration with increasing age.
Legend: Na+ T_C = Sodium ion concentration in tear; K+T_C = Potassium ion concentration in tear; Cl- T_C = Chloride ion concentration in tear; Na+ S_C = Sodium ion concentration in serum; K+ S_C = Potassium ion concentration in serum; Cl-S_C = Chloride ion concentration in serum.