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Table 2 Returned newsletters, overall and by study address status

From: Predictors of locating women six to eight years after contact: internet resources at recruitment may help to improve response rates in longitudinal research

 

Population density of the region

  

Returned newsletter*

Low (n = 750)

High (n = 750)

Full Sample (n = 1,500)

Overall (n = 1,500)

133

(17.7)

146

(19.5)

279

(18.6)

Study address status

      

   No change (n = 1,030)

21

(4.2)

23

(4.3)

44

(4.3)

   New address (n = 106)

7

(8.0)

9

(47.4)

16

(15.1)

   Not identified (n = 364)

105

(64.8)

114

(56.4)

219

(60.2)

  1. Values expressed as number (percent).
  2. *Newsletter mailed in May 2003 returned due to incorrect or incomplete address.
  3. Address status as determined by March–May 2003 web-search [10-12].
  4. "Possible" address and "unable to determine" grouped since sent to last known address (results statistically similar: 59% of possible address and 61% of unable to determine were returned, chi-square = 0.24, df = 1, p = 0.62).
  5. Low population density = Oxford County, population density = 49/km2; high population
  6. density = East York within Toronto, population density = 5,418/km2 [9].