共 5 条
[1]
BAXT WG, 1992, ANN INTERN MED, V116, P94
[3]
IF NOTHING GOES WRONG, IS EVERYTHING ALL RIGHT - INTERPRETING ZERO NUMERATORS
[J].
JAMA-JOURNAL OF THE AMERICAN MEDICAL ASSOCIATION,
1983, 249 (13)
:1743-1745
[5]
1992, STATA REFERENCE MANU, P175