Methodology of the Mannheim Corona Study

On this page you will find the latest methodological analyses of the Mannheim Corona Study (MCS).

A methodological analysis of the MCS was published in the Survey Research Methods special issue on survey research methods during the COVID-19 crisis. The article and appendix tables can be found below.

Key methodological findings on the Mannheim Corona Study are regularly updated and can be found in the tables below.

  • Weekly response rates

    WeekMonTueWedThuFriSatSunTotal
    1

    62.8%

    59.4%64.5%60.4%56.8%57.8%59.5%60.2%
    268.7%61.0%67.6%63.5%60.8%63.0%66.1%64.4%
    366.2%61.1%66.1%62.5%60.2%63.1%65.9%63.6%
    467.0%61.6%66.0%63.4%59.3%59.3%63.1%62.8%
    566.7%61.5%64.3%62.9%61.2%62.5%65.9%63.6%
    666.2%60.4%65.5%63.9%57.6%62.8%65.3%63.1%
    764.8%57.5%61.8%60.1%58.8%61.3%64.1%61.2%
    865.0%58.4%64.4%61.8%57.8%60.3%66.4%62.0%
    964.2%57.6%60.0%59.6%60.5%60.8%63.6%60.9%
    1065.7%56.5%62.8%61.4%60.2%62.0%62.9%61.6%
    1160.2%56.8%63.0%61.3%56.1%59.5%60.1%59.6%
    1261.3%55.1%62.4%58.0%59.4%59.1%62.0%59.6%
    1361.3%57.1%63.5%59.3%56.8%58.6%64.6%60.2%
    1461.7%52.8%60.6%58.4%58.4%57.5%60.4%58.5%
    1562.2%53.8%58.9%57.6%54.4%58.9%62.0%58.3%
    1661.1%53.0%59.8%57.3%54.7%56.1%61.3%57.6%
    Total64.1%57.7%63.2%60.7%58.3%60.1%63.3%61.1%

     

  • Weekly on the day of invitation response rates

    WeekMonTueWedThuFriSatSunTotal
    156.2%52.1%56.0%52.6%45.9%45.9%51.3%50.9%
    262.8%54.8%60.9%57.5%53.7%50.3%58.0%56.8%
    359.2%55.5%58.4%55.4%53.1%51.6%57.1%55.8%
    457.3%55.4%58.8%55.5%51.8%47.9%52.3%54.1%
    561.0%53.6%57.3%54.3%53.7%50.0%58.4%55.4%
    657.8%53.5%58.4%57.6%50.4%51.5%56.6%55.1%
    759.2%49.8%53.0%51.5%48.6%50.4%56.1%52.6%
    858.1%52.0%57.1%56.3%49.2%47.5%56.3%53.8%
    955.8%51.6%52.7%48.1%51.1%48.9%53.1%51.6%
    1059.7%49.9%54.9%54.5%51.1%49.9%41.7%51.7%
    1151.1%48.0%56.4%55.5%49.2%46.6%48.8%50.8%
    1252.2%48.4%54.9%50.6%49.4%44.6%48.2%49.8%
    1354.6%50.4%54.9%50.5%48.1%46.3%56.7%51.6%
    1455.4%46.4%53.1%51.2%48.8%43.9%52.6%50.2%
    1556.2%48.2%50.7%50.2%47.8%45.5%52.9%50.2%
    1652.7%44.6%53.1%50.2%45.6%42.3%51.4%48.6%
    Total56.8%50.9%55.7%53.2%49.8%47.7%53.2%52.5%

     

  • Share of respondents who respond on the day they are invited (rather than the following day)

    WeekMonTueWedThuFriSatSunTotal
    189.4%87.8%86.8%87.2%80.8%79.4%86.1%85.4%
    291.4%89.8%90.0%90.6%88.3%79.8%87.7%88.2%
    389.4%90.8%88.3%88.6%88.1%81.8%86.7%87.7%
    485.6%89.9%89.0%87.6%87.3%80.8%82.8%86.1%
    591.4%87.2%89.1%86.3%87.7%80.0%88.6%87.2%
    687.3%88.6%89.1%87.4%87.6%82.1%86.8%87.0%
    791.3%86.5%85.8%85.7%82.6%82.2%87.5%86.0%
    889.4%89.1%88.7%91.1%85.1%78.8%84.7%86.7%
    986.9%89.6%87.9%80.7%84.5%80.5%83.5%84.8%
    1090.9%88.3%87.5%88.8%84.8%80.4%66.4%83.8%
    1184.8%84.6%89.5%90.6%87.7%78.4%81.1%85.3%
    1285.1%87.8%88.0%87.3%83.2%75.5%77.8%83.5%
    1389.0%88.2%86.4%85.2%84.6%78.9%87.8%85.8%
    1489.9%87.9%87.6%87.8%83.5%76.3%87.2%85.8%
    1590.3%89.8%86.2%87.2%87.8%77.3%85.3%86.2%
    1686.3%84.2%88.9%87.8%83.3%75.3%83.9%84.3%
    Total88.7%88.1%88.1%87.7%85.4%79.2%84.0%85.9%

     

  • Socio-demographic composition of MCS respondents by day of the week (averaged across data collection weeks) compared to the German Mikrozensus (weighted data, all characteristics measured in the GIP in September 2019)

     MonTueWedThuFriSatSunTotalMZ
    Gender         
    Male49.6%49.4%49.8%48.9%51.1%50.6%50.6%50.0%50.4%
    Female50.4%50.6%50.2%51.1%48.9%49.449.4%50.0%49.6%
    Age         
    16-2917.3%16.9%16.9%20.0%16.2%18.5%15.2%17.3%20.9%
    30-3917.3%18.7%17.4%15.7%19.1%17.0%17.9%17.6%16.9%
    40-4913.4%12.7%14.7%14.9%14.7%16.2%15.8%14.6%17.4%
    50-5925.0%25.5%24.6%23.6%25.3%26.8%23.3%24.9%21.5%
    60-7527.1%26.2%26.3%25.8%24.7%21.5%27.7%25.6%23.3%

    Education

             
    Low23.9%26.6%26.6%25.1%27.2%26.5%28.1%26.3%31.0%
    Medium35.3%32.0%31.4%30.4%31.3%32.8%32.4%32.2%34.0%
    High40.8%41.4%42.0%44.6%41.5%40.7%39.5%41.5%35.1%
    Household size         
    121.4%19.7%22.3%22.3%20.8%20.0%20.0%20.9%21.9%
    236.4%37.5%37.5%37.1%35.3%37.9%39.3%37.3%36.1%
    318.7%21.9%19.3%18.7%19.7%18.6%21.2%19.7%18.8%
    4 or more23.5%20.9%21.0%22.0%24.2%23.6%19.6%22.1%23.2%
    Citizenship         
    German95.0%97.6%96.9%97.1%97.7%95.8%98.6%97.0%87.2%
    Non-German5.0%2.4%3.1%2.9%2.3%4.2%1.4%3.0%12.8%
    Marital status         
    Single34.6%34.5%35.7%35.3%36.6%36.6%35.2%35.5%35.9%
    Married52.5%52.4%50.9%52.2%53.0%52.7%53.0%52.4%52.3%
    Other12.9%13.1%13.4%12.4%10.4%10.7%11.8%12.1%11.8%
    Region         
    West79.5%80.3%80.7%80.3%80.6%81.6%81.4%80.6%80.5%
    East20.5%19.7%19.3%19.7%19.4%18.4%18.6%19.4%19.5%

     

  • Socio-demographic composition of MCS respondents at each week of data collection compared to the German Mikrozensus (weighted data, all characteristics measured in the GIP in September 2019)

     Week 1Week 2Week 3Week 4Week 5Week 6Week 7Week 8Week 9Week 10Week 11Week 12Week 13Week 14Week 15Week 16TotalMZ
    Gender                  
    Male50.3%49.6%50.0%49.7%50.6%49.4%50.0%50.0%50.1%49.9%50.1%50.1%49.9%50.5%50.1%49.6%50.0%50.4%
    Female49.7%50.4%50.0%50.3%49.4%50.6%50.0%50.0%49.9%50.1%49.9%49.9%50.1%49.5%49.9%50.4%50.0%49.6%
    Age                  
    16-2917.4%17.0%17.5%16.8%17.8%17.0%17.3%17.5%17.5%17.3%17.2%17.8%17.3%17.1%17.5%17.1%17.3%20.9%
    30-3917.5%17.8%17.6%17.7%17.5%17.4%17.5%18.0%17.8%17.7%17.1%17.4%17.3%17.9%17.4%17.5%17.6%16.9%
    40-4914.3%14.9%14.8%14.7%14.6%14.8%15.1%14.3%14.5%14.6%14.6%14.4%14.9%14.6%14.1%14.5%14.6%17.4%
    50-5925.3%24.7%24.5%24.8%24.5%24.5%24.5%24.7%25.2%25.0%25.3%24.7%24.6%24.8%25.1%25.1%24.8%21.5%
    60-7525.5%25.6%25.6%25.9%25.6%26.4%25.6%25.5%25.7%25.4%25.7%25.7%26.0%25.6%25.9%25.8%25.7%23.3%

    Education

                      
    Low25.8%26.5%26.0%26.4%26.1%26.0%26.6%26.1%26.0%26.6%26.7%26.2%26.2%26.5%26.4%26.0%26.2%31.0%
    Medium32.8%31.8%32.4%32.4%32.0%32.7%31.9%32.3%33.1%31.7%32.6%32.2%32.2%32.2%32.0%32.6%32.3%34.0%
    High41.4%41.7%41.6%41.2%41.9%41.4%41.5%41.6%40.9%41.7%40.7%41.6%41.6%41.4%41.7%41.5%41.5%35.1%
    Household size                  
    120.9%21.2%21.1%21.0%20.4%21.1%20.7%20.7%20.8%20.5%21.0%21.1%21.0%21.3%20.8%21.2%20.9%21.9%
    237.4%37.1%37.0%37.5%37.4%37.6%37.0%37.2%37.6%37.3%37.6%37.1%37.0%36.9%37.6%37.2%37.3%36.1%
    319.3%19.4%19.6%19.3%19.8%19.2%19.8%20.1%19.8%20.1%19.7%19.7%20.2%19.9%20.1%19.9%19.7%18.8%
    4 or more22.4%22.2%22.4%22.2%22.4%22.1%22.5%21.9%21.8%22.1%21.7%22.1%21.8%21.9%21.4%21.7%22.0%23.2%
    Citizenship                  
    German96.9%96.9%96.6%97.0%97.1%96.8%97.1%96.9%96.8%97.0%97.0%97.1%97.0%97.2%96.8%97.2%96.9%87.2%
    Non-German3.1%3.1%3.4%3.0%2.9%3.2%2.9%3.1%3.2%3.0%3.0%2.9%3.0%2.8%3.2%2.8%3.1%12.8%
    Marital status                  
    Single35.7%35.5%35.6%35.2%35.8%35.4%35.3%35.6%35.1%35.6%35.5%35.5%35.3%35.5%35.6%35.1%35.5%35.9%
    Married52.3%52.5%52.4%52.4%52.3%52.4%52.6%52.3%52.8%52.3%52.4%52.1%52.4%52.1%52.3%52.6%52.4%52.3%
    Other11.9%12.0%12.0%12.4%11.9%12.2%12.1%12.2%12.1%12.2%12.1%12.4%12.4%12.4%12.1%12.4%12.2%11.8%
    Region                  
    West80.4%80.2%80.6%80.5%80.5%80.7%80.8%80.3%81.0%80.9%80.7%80.5%80.7%80.6%80.4%80.7%80.6%80.5%
    East19.6%19.8%19.4%19.5%19.5%19.3%19.2%19.7%19.0%19.1%19.3%19.5%19.3%19.4%19.6%19.3%19.4%19.5%

     

  • AARBs by participation day across data collection days and weeks

    WeekMonTueWedThuFriSatSunTotal
    110.9%12.0%11.4%12.0%13.2%11.9%12.4%12.0%
    210.7%13.6%11.0%10.5%11.5%9.8%11.5%11.2%
    310.0%12.6%10.8%11.0%10.9%8.6%13.1%11.0%
    410.9%10.7%10.7%10.9%13.1%9.2%12.6%11.5%
    59.9%14.0%10.8%10.4%13.7%11.4%12.7%11.8%
    610.6%12.6%12.1%11.1%10.8%10.7%11.3%11.3%
    710.6%14.6%10.4%10.3%11.4%11.9%13.5%11.8%
    811.7%13.5%11.7%10.8%10.2%10.0%12.3%11.5%
    911.6%13.8%12.1%9.4%12.4%9.8%13.1%11.7%
    109.3%14.9%11.0%10.6%12.7%10.9%13.3%11.8%
    1110.6%14.8%10.6%11.7%12.7%11.4%12.1%12.0%
    1212.0%12.9%10.6%12.3%11.8%10.4%10.1%11.5%
    1311.2%11.9%11.5%13.4%13.1%8.6%13.1%11.8%
    1410.3%13.0%13.0%10.7%11.9%9.5%12.7%11.6%
    1511.0%13.2%13.0%10.0%12.3%10.6%12.4%11.8%
    1612.4%13.6%11.2%11.5%13.0%10.5%12.1%12.0%
    Total10.9%13.4%11.4%11.0%12.2%10.3%12.4%11.7%

     

  • AARBs by invitation day across data collection days and weeks

    WeekMonTueWedThuFriSatSunTotal
    112.0%12.0%13.4%11.2%11.9%14.8%12.0%12.5%
    211.6%13.3%12.2%10.3%12.3%10.7%12.7%11.9%
    311.3%13.2%12.2%9.9%10.5%9.6%12.5%11.3%
    410.9%14.0%11.6%11.0%13.5%11.2%12.2%12.1%
    510.5%15.1%12.1%11.6%13.0%11.8%12.9%12.4%
    610.7%14.3%12.8%12.1%10.8%10.7%12.2%11.9%
    711.8%14.7%11.7%11.3%10.9%12.7%12.0%12.2%
    810.9%14.3%12.0%11.0%11.0%10.4%13.0%11.8%
    910.8%14.8%11.0%11.5%12.2%10.9%12.7%12.0%
    1010.8%15.0%12.4%11.6%12.8%11.3%12.8%12.4%
    1110.4%13.6%10.5%12.3%12.1%11.6%14.6%12.2%
    1210.2%16.3%12.9%10.7%11.8%10.5%12.6%12.1%
    1310.7%12.3%14.3%12.3%11.0%10.4%12.0%11.9%
    1410.3%15.3%12.6%11.5%13.3%10.8%14.2%12.6%
    1511.9%13.4%12.1%11.5%13.0%10.3%13.7%12.3%
    1611.5%14.7%13.0%11.7%13.3%9.7%13.9%12.6%
    Total11.0%14.1%12.3%11.3%12.1%11.1%12.9%12.1%