Analysis of Factors Influencing Telephone Call Response Rate in an Epidemiological Study

Table 1

Distribution of inhabitants by region and age.

	18–39 years	40–59 years	≥60 years	Total
Almeria	99 617	81 403	55 157	236 177
Zaragoza	57 042	54 411	56 925	168 378
Seville	92 063	99 991	51 407	243 461
Total	248 722	235 805	163 489	648 016