Brussels	Copenhagen	Helsinki	Lisbon	London	Total DN	Amsterdam	Berlin	Hamburg	Madrid	Rome	Vienna	Total c2g
No. of customers	10,665	30,136	5696	9557	12,622	68,676	16,486	53,714	42,995	31,550	35,912	26,286	2,09,943
No. of people who opted out	1737	22,047	668	472	2738	27,618
No. of people who received the survey link	8928	8089	5028	9085	9884	41,058
Percentage of members opted-in for advertising e-mails	83.71%	26.84%	88.27%	95.06%	78.31%	59.79%
No. of people who didn't respond	7583	6917	4020	6982	8889	34,435
No. of received questionnaires	1345	1172	1008	2103	995	6623	476	1795	1568	2806	2254	1135	10,034
No. of received questionnaires / no of customers	12.6%	3.9%	17.7%	22.0%	7.9%	9.6%	2.9%	3.3%	3.6%	8.9%	6.3%	4.3%	4.8%
Response rate	15.06%	14.49%	20.05%	23.15%	10.07%	16.13%
No. of uncomplete questionnaires	255	147	96	423	222	1143
Share of incomplete questionnaires	19.0%	12.5%	9.5%	20.1%	22.3%	17.3%	28.4%	25.4%	23.9%	26.4%	33.2%	23.6%	27.1%
Completed questionnaires	1090	1025	912	1680	773	5480	341	1339	1193	2065	1505	867	7310
No. of deleted questionnaires due to responsetime <5 min	22	35	37	12	41	147
No. of deleted questionnaires due to response time <5/7 sec for question 12/23	4	6	1	6	3	20
No. of deleted questionnaires due to incorrect answers to control questions	30	14	14	21	2	81
No. of questionnaires after plausibility check	1044	970	860	1641	727	5242	311	1280	1151	1985	1444	800	6971
Share of deleted questionnaires due to plausibility check	4.2%	5.4%	5.7%	2.3%	6.0%	4.3%	8.8%	4.4%	3.5%	3.9%	4.1%	7.7%	4.6%
No. of reduced questionnaires because customers don't live in the area or they relocated recently	122	77	122	272	53	646
No. of responses eliminated from the analysis	178	132	174	311	99	894
Share of deleted questionnaires due to “other area” and “car-less before entering FFCS”	11.7%	7.9%	14.2%	16.6%	7.3%	12.3%	17.0%	12.0%	13.0%	14.8%	15.2%	12.6%	13.9%
Final no. of questionnaires	922	893	738	1369	674	4596	258	1127	1001	1691	1224	699	6000