Table 1.

The median (IQR) for McMonnies questionnaire scores, PRT measurements, and TF grades

Test	Median (IQR)
	Study group (N=40)	Control group (N=40)
McMonnies scores	4.00 (4.75)	3.05 (1.65)
PRT1 (mm)*	27.00 (8.75)	29.00 (9.15)
PRT2 (mm)*	23.50 (8.00)	28.00 (8.75)
TF1 grades*	1.50 (0.88)	0.78 (0.65)
TF2 grades*	2.65 (1.23)	0.82 (0.70)

Note:

^*P<0.05.

Abbreviations: PRT1, the median for phenol red thread measurements before the consumption of green tea; PRT2, the median for the phenol red thread measurements after the consumption of green tea; TF, tear ferning; TF1, the median for TF grades before the consumption of green tea; TF2, the median for the TF grades after the consumption of green tea.