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Table 5 Comparison of sociodemographic characteristics of those with and without tract assignment1, the LC-SES study, 2001–2002. 1Chi Square test used to statistically compare differences in proportions and t-test used to statistically compare differences in means of those assigned and not assigned census tracts. 2Ns for each characteristic vary slightly due to missing data. * p < 0.05; ** p < 0.01; *** p < 0.001; **** p < 0.0001

From: Historical measures of social context in life course studies: retrospective linkage of addresses to decennial censuses

  Age 30 Age 40 Age 50
  Tract assigned Tract assigned Tract assigned
Characteristics at baseline examination Yes No Yes No Yes No
Total N (%)2 8,448 (67) 4,233 (33) 7,262 (81) 1,709 (19) 2,143 (86) 353 (14)
Mean age 53 54 56.3 57 62 62
% Male 41 46**** 43 47* 46 46
% African American 25 26 23 25 21 25
Educational attainment (%)       
   < 12 years 21 21**** 23 26*** 28 35***
   12 years or equivalent 44 36 42 37 40 40
   > 12 years 35 43 35 37 32 35
Family income (1987–89) (%)       
   < $16,000 19 21** 20 25**** 28 36*
   $16,00–49,999 55 51 54 53 56 51
   $50,000 26 28 25 22 16 13
% Born outside of study state 20 38**** 23 36**** 23 35****
Father's education (%)       
   0–9 years 53 48**** 55 52 57 61
   9–12 years 35 34 32 34 29 23
   > 12 years 12 17 13 14 14 15
Father's occupation (%)       
   Professional & management 11 14 11 12 10 15
   Technical & sales 11 11 11 11 12 8
   Mechanical & crafts 21 18 20 19 21 15
   Farming 30 31 32 33 34 39
   Laborers, operators & drivers 21 19 20 19 17 14
   Service 7 7 7 6 7 8
% Parents owning home 92 86**** 93 82**** 93 80****