Table 1: The total number of research-persons by phase of collecting and entry for the main regions

See also the numbers for the Netherlands, or go back to the state of affairs.

Provinces of Friesland, Utrecht and Zeeland and the city of Rotterdam* 1850-1862 1863-1922 Total birth period 1850-1922

N % of total N % of total 1 Sept 2006 1 Jan 2005 1 Sept 2004
N %

Total number of research-persons 2544
10125
12669



1. Data-collection 1: persons followed in region of birth 2544 100.0 10125 100.0 12669 100.0 100.0 100.0
2. Data-collection 2: a.o. migration trajectories 2544 100.0 10125 100.0 12669 100.0 100.0 95.8
3. Data entry 2100 82.5 9000 88.9 11100 87.6 73.2 56.8
4. Checking of data entry 2028 79.7 8216 81.1 10244 80.9 52.0 46.0
5. Finished: number of marriage-certificates 930 a59.9 4472 c56.8 5402 d57.3 51.9 51.9
6. Finished: Life courses (population register) 1800 70.8 6720 66.4 8520 67.3 43.9 37.1


Explanation: the numbers of phase 3, 4 and 6 are estimations and not exact counts.
a Calculation was based on the total amount of 1552 expected marriage-certificates.
c Calculation was based on the total amount of 5548 expected marriage-certificates.
d Calculation was based on the total amount of 9429 expected marriage-certificates.
*Rotterdam includes the surrounding villages