The 1 - , 5 - , 10- year un - conversion rates were 84.9% ,70.8% and 45.3% respectively. For HBeAb( + ) patients, the rate of DC, HCC and mortality were 7.4‰,0‰ and 4.4‰, lower than that of HBeAb( - ) group (20.5‰, 13.2‰and 30.6‰).
Analysis indicates that the rate of the groundwater table lowering in Shiyang River basin generally exceeds 0.3?m/year, and the mean annual rate of groundwater decrease in Wuwei and Minqing sub-basins reaches 1.11-3.98%.
This population experienced a mean annual rate of increase of 30.6% for the period 1989-1996, perhaps due, in part, to significant immigration, but has been stable since 1996.
A 42% reduction in evaporation rate, combined with maximum historical rates of precipitation (1.8 times the mean annual rate) and discharge (2.4 times the mean annual rate), were sufficient to maintain Lake Lahontan at its 20-15 ka BP level.
When discharge was increased to 3.8 times the present-day, mean annual rate, the ～ 13.5 ka BP maximum level of Lake Lahontan was attained within 1400 years.
The mean annual rate of visual-field change (rate of decay) was calculated and found to be 28.5 mm2/year for the normals, 153.5 mm2/year for the suspects, and 376.4 mm2/year for those patients who developed glaucoma.