H.Pylori
Copyright ©The Author(s) 2002.
World J Gastroenterol. Dec 15, 2002; 8(6): 1103-1107
Published online Dec 15, 2002. doi: 10.3748/wjg.v8.i6.1103
Table 2 Follow-up duration of the cohort
FieldsnAverage follow-up duration(yrs)Standard devisiom
Muping105511.14962.8798
Zhoushan87114.18832.5603
Changzhou7936.55962.1343
Total271910.88054.0358