Table 2.

Problems and Limitations of 358,520 Addresses Provided by LexisNexis^a for 133,479 California Teachers Study Participants Enrolled in 1995–1996

Problem/Limitationb	No. of Addresses (n = 358,520)	No. of Participants (n = 133,479)
No address provided		2,558
Duplicate address	15,694	12,274
Nonresidential address	42,577	30,422
Address date fell after date of death	9,068	742
Address date fell prior to date of birth	1,245	1,245
Multiple unique addresses for the same time period	14,991	7,307
Address was missing date	196	16

Abbreviation: CTS, California Teachers Study.

^a LexisNexis is a division of RELX, Inc., Dayton, Ohio.

^b Categories are not mutually exclusive.