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--- covq [2022/11/18 08:37] – trynke
+++ covq [2025/02/05 13:49] (current) – external edit 127.0.0.1
@@ Line 14: / Line 14: @@
 ===== Reference paper =====
-  * Mc Intyre K et al. (2021) Lifelines COVID-19 cohort: investigating COVID-19 infection and its health and societal impacts in a Dutch population-based cohort. BMJ Open. 2021 Mar 17;11(3):e044474.
+  * Mc Intyre K et al. (2021) [[https://bmjopen.bmj.com/content/11/3/e044474.long|Lifelines COVID-19 cohort: investigating COVID-19 infection and its health and societal impacts in a Dutch population-based cohort]]. BMJ Open 11(3):e044474.
+Other papers from the Lifelines COVID-19 initiative:
+  * van Blokland IV et al. (2021) [[https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0255402|Using symptom-based case predictions to identify host genetic factors that contribute to COVID-19 susceptibility]]. PLoS ONE 16(8): e0255402
+  * Ballering AV et al. (2022) [[https://www.thelancet.com/journals/lancet/article/PIIS0140-6736(22)01214-4/fulltext|Persistence of somatic symptoms after COVID-19 in the Netherlands: an observational cohort study]]. Lancet 400(10350):452-461
+  * Warmerdam CAR et al. (2022) [[https://journals.plos.org/plosgenetics/article?id=10.1371/journal.pgen.1010135|Increased genetic contribution to wellbeing during the COVID-19 pandemic]]. PLoS Genet 18(5):e1010135
+  * Ori, A et al. (2023) [[https://www.sciencedirect.com/science/article/pii/S0165032722013003?via%3Dihub|Longitudinal analyses of depression, anxiety, and suicidal ideation highlight greater prevalence in the northern Dutch population during the COVID-19 lockdowns]]. J Affect Disord 323:62-70
 ===== Timeline & Response =====
 In April 2020, Lifelines started to send out the first questionnaires to ~130,000 adult Lifelines [[cohort|participants]]. Follow-up questionnaires were send out on a weekly (and later bi-weekly and monthly) basis.
-  * From questionnaire 8 ~110,000 participants were invited
+  * Questionnaire 1-7: ~130.000 participants were invited
-  * From questionnaire 18 ~65,500 participants were invited (selection: at least 2 previous COVQ questionnaires filled in)
+  * Questionnaire 8-17: ~110,000 participants were invited
+  * Questionnaire 18-23: ~65,500 participants were invited (selection: at least 2 previous COVQ questionnaires filled in)
+  * Questionnaire 24-29: ~50,000 participants were invited (selection: at least 1 COVQ questionaires filled in in 2021, and no "unsubscribe" e-mail sent)
 ^ COVQ  ^ Date                    ^ Response  ^ Response rate  ^
@@ Line 42: / Line 51: @@
 | 16b   | 08-12 to 05-01-2021     | ~32,000   | 29%            |
 | 17    | 05-01 to 08-02-2021     | ~34,000   | 31%            |
-| 18**  | 25-02 to 25-03-2021     | ~32,000   | 49%            |
+| 18*   | 25-02 to 25-03-2021     | ~32,000   | 49%            |
 | 19    | 29-03 to 22-04-2021     | ~29,000   | 45%            |
 | 20    | 26-04 to 20-05-2021     | ~29,000   | 44%            |
 | 21    | 25-05 to 18-06-2021     | ~29,000   | 45%            |
-| 22    | 04-07 to 30-07-2021     | ~24,000   | 37%            |
+| 22    | 04-07 to 30-07-2021     | ~24,000   | 36%            |
-| 23    | 11-10 to 04-11-2021     | ~23,000   | 36%            |
+| 23    | 11-10 to 04-11-2021     | ~23,000   | 37%            |
-| 24    | 20-12-21 to 12-01-2022  | ~25,000   | 48%            |
+| 24*   | 20-12-21 to 12-01-2022  | ~25,000   | 48%            |
 | 25    | 28-02 to 24-03-2022     | ~20,000   | 38%            |
 | 26    | 11-04 to 04-05-2022     | ~20,000   | 40%            |
 | 27    | 31-05 to 27-06-2022     | ~19,000   | 36%            |
 | 28    | 11-07 to 03-08-2022     | ~18,000   | 36%            |
+| 29    | 29-09 to 19-10-2022     | ~21,000   | 42%            |
 ^ Number of participants  ^ First 19 questionnaires completed?  ^