1970 HUNGARIAN CENSUS OF POPULATION Information on the data collection and processing (1977)

I. THE COMPREHENSIVE REWIEV OF THE DATA COLLECTION AND PROCESSING - 11. The control of the reliability of the census

the census of 1970 control sheets were used to substitute for the census sheets of those persons who had permanent and temporary residences and were left out from the census in one place, i. e. their sheets could not be paired. Thus a great portion of the missing absent persons was recovered. Thus the rough results of the examination of completeness required individual judgement from the point of view of categories of population and probable supplying. The comparison is complete for Budapest and the county towns as well as three counties as far as the country is concerned. For the other counties the total number of the missing persons is broken down according to the data of the above three counties into categories of population. According to the data the completeness of the census is higher in the villages than in the towns where the temporary residences and the changes of place have a more strongly disturbing effect. The great movement of the population on January 1 evidently affects the completeness of our censuses. In the individual categories of population throughout the country the lack of data is of the order of approximately 0, 4 percent. Table 1. MAIN RESULTS OF THE CONTROL OF COMPLETENESS Lack of data in the census affecting the Denomination Present Inhabitant Resident population Total number of missing persons 154 139 205 Presumably retrieved through control sheets

a/ 55 35 104 Remaining presumable lack (actual) 99 104 101 In percent of the number of the population of the 1/4 percent sample 0, 38 0, 40 0, 39 Percentage proportions broken down into areas: Budapest 0, 68 0, 52 0, 57 County towns 0, 63 0,90 0, 89 Counties (other towns and villages) 0,29 0,33 0, 31 a/ The retrieval occured only in those cases where the person in question had a permanent or temporary residence at his other domicile. Retrieval in this sense may be regarded as minimal. e/ EXAMINATION OF THE RELIABILITY OF THE CENSUS DATA Personal criteria Age The examination of the errors in the declaration of age is almost a classical chapter in the control of the census. Also in Hungary it was the beginning of the post-enumeration control as mentioned before in the case of the census of 1960. 99