共 10 条
[1]
BECKER DM, 1987, AM J PREV MED, V3, P45
[2]
FLEISS JL, 1980, STATISTICAL METHODS
[6]
SELF-ASSESSMANT OF HEALTH STATUS - LONGITUDINAL STUDY OF SELECTED ELDERLY SUBJECTS
[J].
JOURNAL OF CHRONIC DISEASES,
1964, 17 (05)
:449-&
[7]
MCKINLAY SM, 1984, DHHS PHS843346 PUB
[8]
*SAS I INC, 1985, SAS US GUID STAT