Module 1: Zygosity questionnaire for cohorts 1 and 2 [instrument]

Results of zygosity assessment and zygosity questionnaires

Questions

Sort Question Name
0 generated/assigned variable zyg0109
1 Who was born first? Please enter the name. zyg0103
2 Who was born first? Please enter the name. zyg0104
3 generated/assigned variable zyg0105
4 generated/assigned variable zyg0106
5 How tall is the older twin [name] currently in cm? zyg0200t
6 How tall is the younger twin [name] currently in cm? zyg0200u
7 Are there differences in the colors of the twins' hair? zyg0300
8 Are there differences in the texture of the twins' hair (e.g., fine or thick, straight or curly)? zyg0301
9 Are there differences in the colors of the twins' eyes? zyg0302
10 Are there differences in the shape of the twins' earlobes? zyg0303
11 Did both twins get their first teeth at the same time? zyg0400
12 Do you know the blood groups (A,B,AB,0) and/or the Rhesus factors (RH+/RH-) of your twins? zyg0500
13 Please tick the respective blood group and the respective Rhesus factor of the twin. zyg0501
14 Please tick the respective blood group and the respective Rhesus factor of the twin. zyg0502
15 Please tick the respective blood group and the respective Rhesus factor of the twin. zyg0503
16 Please tick the respective blood group and the respective Rhesus factor of the twin. zyg0504
17 Are there any differences between the twins caused by problems in childbirth, by an accident or an illness? zyg0600
18 Please give more details about these differences. zyg0601
19 What about the similarities between the twins as they are getting older? As they are getting older, the similarities: zyg0602
20 What do you think: Are your twins monozygotic (identical) or dizygotic (non-identical)? zyg0700
21 What makes you think that? zyg0701
22 Did a medical professional (e.g., family doctor, nurse, physician) ever tell you your twins' zygosity? zyg0702
23 How did they make this determination? zyg0703
24 When you look at early photographs of the twins when they were between 2 and 4, can you tell them apart without hints from clothing or other clues? zyg0800
25 Did people confuse the twins when they were very young? zyg0801
26 Did people confuse the twins when they were together? zyg0808
27 Would you say that when the twins were very young, they... zyg0809
28 We are also interested in knowing if there are other twins in your family. Which generation and which side of your family are they on (mother's side/father's side)? Multiple answers are possible. zyg0900
29 For each set of twins in your family, please state whether they are identical/monozygotic or non-identical/dizygotic. zyg0920
Instrument info

Name: twinlife-2014-f2f_modul1_zygk1k2

Label: Module 1: Zygosity questionnaire for cohorts 1 and 2


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