Capacity and Cost model Kees van Berkel Mariëtte Vosmer Jerusalem, July 2013

Capacity planning addressbound hours (AGU) = a) hours needed to conduct a survey (weight * sample) b) hours available for interview work (1350 / fte) interviewerbound hours (IGU) = hours available for training, hollidays, meetings, performance interview, illness etc. (working hours fte minus 1350)

Needed AGU = G * sample G = weight per address per survey p = estimated responsrate per survey per region (?) a = time needed for introduction (5 min) b = time needed for interviewing (?) c = time needed for round off (5 min) d = time needed for approach (5 min) e = time needed for administration (3 min) f = mean distance home address interviewer – address sample unit (9 km v.v.) v = mean speed by car (35 km/h) h = mean number of attempts (2.3) G = p (a + b + c) + d + e + f/v * h G = p (5 + b + 5) /35 * 2.3 Capacity planning (2)

Time needed for approach and administration in region 1 attemptsaddressesadmin.time approach time per addrtotal per addrtotal abs%min ,0 0,6 0, ,0 3,7 7,0 2, ,0 3,212,0 3, ,0 2,217,0 2, , 0 1,322,0 1, ,0 0,527,0 0,8 >= , 0 0,632,0 1,0 total ,212,1

Mean distance per region Region2005/ km/addrkm/attempt 120,511,610,27,9 222,111,610,67,6 322,910,78,76,7 418,08,77,55,2 511,82,6 2,0 614,36,86,54,9 713,16,33,64,9 811,34,64,42,9 910,75,04,42,6 1023,111,19,57,5 1114,47,16,44,3 1223,010,39,76,7 1317,48,49,06,0 totaal17,68,07,25,2

RegionLSFHealthPoliceHESHous (t)Hous (e)CultCh total Weight per survey per region

Needed AGU - example RegionLFSHealthCrimeHESHousingDCultCh total

P roblems: - number of attempts depends on degree of urbanization - speed depends on degree of urbanization - distance between sample addresses depends on degree of urbanization Solution: - take into account the time needed per attempt per region - take into account the number of attempts per region - speed: distuinguish between regions - distance: distuinguish between regions S tandard approach strategy: max. 6 attempts or 7 if the 6th attempt results in appointment Capacity planning (3)

- Needed AGU tuned to allowed AGU on annual basis - Needed AGU tuned to allowed AGU on monthly basis - Needed AGU tuned to available AGU specific fieldwork periode - Allocation addresses to interviewers - Datacollection - Monitoring progress fieldwork - Evaluation planning versus realization Planning cycle

Fixed costs: independent of sample size - projectmanagement - sample design, drawing, adapting - questionnaire design, programme, test - training interviewers Variable costs: dependent of sample size - datacollection: working hours and travelling costs, interviewers, postal charges, printercosts etc. Cost model

Cost model - parameters  sample size  respons chance(s)  mode(s)  availability telephone numbers  weight per address (capi – cati)  training interviewers, staff  number of papi-questionnaires  number of enveloppes  number of letters (initial, rappels)  digitalize papi-questionnaires

Costs AGU on annual basis - example surveyssampleneededcost recovered base funded sizefteexternintern request alloweddeficit LFS ,6 4,256,4 Health ,5 0,114,4 Crime ,14,7 0,4 HES ,1 HousingD ,2 CultCh ,1 Total ,725,64,7 74,469,9-4,5