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Table 1 Sociodemographic and (selected) health characteristics of the sample, and the sub-groups for whom blood samples were, and were not taken

From: The prevalence and social patterning of chronic diseases among older people in a population undergoing health transition. A 10/66 Group cross-sectional population-based survey in the Dominican Republic

Characteristics (number and % unless
otherwise stated)
Whole sample
(n = 2011)
Blood sample taken
(n = 1451)
Blood sample not taken
(n = 560)
Statistical test comparing
sub-groups with and
without blood samples
Age median (25th and 75th centiles) 74 (69-80) 74 (69-81) 74 (69-80) Z = -1.46, p = 0.14
Female sex 1324 (65.9%) 316 (60.0%) 1008 (68.0%) X2 = 11.2, p = 0.001
Education (MV1 = 19)     
None 392 (19.7%) 98 (18.8%) 294 (20.0%) X2 = 0.8, p = 0.39
Some 1022 (51.3%) 268 (51.5%) 754 (51.2%)  
Completed primary 370 (18.6%) 97 (18.7%) 273 (18.5%)  
Secondary or tertiary 208 (10.5%) 57 (11.0%) 151 (10.3%)  
Living alone 254 (12.6%) 79 (15.0%) 175 (11.8%) X2 = 3.5, p = 0.06
Marital status (MV = 15)     
Never married 139 (7.0%) 44 (8.4%) 95 (6.5%) X2 = 4.8, p = 0.19, 3 df
Divorced/separated 465 (23.1%) 133 (25.4%) 332 (22.6%)  
Widowed 806 (40.4%) 198 (37.8%) 608 (41.3%)  
Currently married 586 (29.1%) 149 (28.45) 437 (29.7%)  
Assets     
0-4 648 (32.2) 167 (31.6%) 481 (32.4%) X2 = 0.3, p = 0.58
5 444 (22.1) 115 (21.8%) 329 (22.2%)  
6 733 (36.4) 194 (36.7%) 539 (36.3%)  
7 186 (9.2%) 52 (9.8%) 134 (9.0%)  
Three or more limiting illnesses (MV = 2) 465 (23.1%) 115 (21.8%) 350 (23.6%) X2 = 0.7, p = 0.40
Depression 278 (13.8%) 56 (10.6%) 222 (15.0%) X2 = 6.2, p = 0.01
Dementia 235 (11.7%) 68 (12.9%) 167 (11.3%) X2 = 1.0, p = 0.32
Systolic blood pressure mean (SD) (MV = 20) 136.2 (20.1) 136.3 (20.6) 136.2 (20.0) F = 0.56, p = 0.97, 1989
Waist circumference mean (SD)(MV = 25) 92.3 (12.9) 91.6 (13.6) 92.5 (12.6) F = 0.53, p = 0.18, 1984
  1. 1. MV = missing values