Table 5.
Estimated parameters for the latent-class conditional logit model among parents of children with ASD (n = 584).
| Factor | Class 1 |
Class 2 |
Class 3 |
Class 4 |
||||
|---|---|---|---|---|---|---|---|---|
| Coef | SE | Coef | SE | Coef | SE | Coef | SE | |
| DCE attributes | ||||||||
| Type of researcher | ||||||||
| Nonprofit | 1.28‡ | 0.14 | 0.38† | 0.12 | 0.21† | 0.07 | 0.25† | 0.08 |
| Government | 0.27* | 0.12 | 0.30* | 0.12 | 0.02 | 0.09 | 0.02 | 0.09 |
| For-profit§ | −1.55‡ | 0.16 | −0.68‡ | 0.16 | −0.23* | 0.09 | −0.26† | 0.10 |
| Personally identifiable information | ||||||||
| Not identifiable | 0.25* | 0.11 | 0.37† | 0.13 | 0.08 | 0.07 | 1.23‡ | 0.15 |
| Identifiable§ | −0.25* | 0.11 | −0.37† | 0.13 | −0.08 | 0.07 | −1.23‡ | 0.15 |
| Sensitive information about child | ||||||||
| Not sensitive | 0.17‡ | 0.06 | 0.15* | 0.07 | 0.03 | 0.04 | 0.82‡ | 0.09 |
| Sensitive§ | −0.17‡ | 0.06 | −0.15* | 0.07 | −0.03 | 0.04 | −0.82‡ | 0.09 |
| Personal importance of research topic | ||||||||
| Important | 0.28‡ | 0.07 | 1.64‡ | 0.13 | 0.31‡ | 0.05 | 0.33‡ | 0.06 |
| Not important§ | −0.28‡ | 0.07 | −1.64‡ | 0.13 | −0.31‡ | 0.05 | −0.33‡ | 0.06 |
| Shared results | ||||||||
| Individual results | −0.04 | 0.13 | 0.36‡ | 0.13 | 0.67‡ | 0.09 | 0.18 | 0.09 |
| Summary results | 0.26* | 0.11 | 0.14 | 0.12 | 0.32‡ | 0.08 | −0.01 | 0.08 |
| No results§ | −0.22 | 0.13 | −0.50‡ | 0.15 | −0.99‡ | 0.12 | −0.17 | 0.10 |
| Participant characteristics | ||||||||
| Race/ethnicity | ||||||||
| Non-Hispanic white alone∥ | – | – | – | – | – | – | – | – |
| Non-Hispanic black alone | 0.29 | 0.60 | −0.13 | 0.56 | 0.18 | 0.60 | – | – |
| Non-Hispanic other alone | 0.30 | 0.80 | 0.05 | 0.71 | −0.30 | 1.08 | – | – |
| Hispanic | 0.17 | 0.76 | 0.26 | 0.62 | 0.37 | 0.69 | – | – |
| Income | ||||||||
| Less than $50 000∥ | – | – | – | – | – | – | – | – |
| $50 001 to $100 000 | −0.08 | 0.46 | −0.69 | 0.38 | −0.88* | 0.41 | – | – |
| More than $100 000 | −0.67 | 0.48 | −0.82* | 0.38 | −1.22† | 0.42 | – | |
| Child sex∥ | ||||||||
| Male | – | – | – | – | – | – | – | – |
| Female | 0.33 | 0.39 | 0.30 | 0.32 | −0.04 | 0.40 | – | – |
| Co-occurring conditions | 0.07 | 0.08 | 0.12* | 0.06 | 0.10 | 0.07 | – | – |
| Trust in healthcare system | 0.01 | 0.08 | 0.19† | 0.07 | 0.21† | 0.08 | – | – |
| Health literacy | −0.08 | 0.09 | 0.02 | 0.08 | −0.10 | 0.09 | – | – |
| Healthcare decision making | −0.09 | 0.22 | −0.21 | 0.18 | −0.12 | 0.20 | – | – |
| Intercept | 1.02 | 1.63 | −1.05 | 1.44 | 0.10 | 1.64 | – | – |
| FXS parents per class | 16.8% | 34.5% | 25.8% | 22.9% | ||||
Note. Coefficients in the DCE attributes section of the table are the preference weights for each attribute level in the class. Significant coefficients in the participant characteristics section indicate variables that differentiate membership in the groups, where class 4 is the reference category.
ASD indicates parents of children with autism spectrum disorder; DCE, discrete choice experiment; FXS, parents of children with fragile X syndrome; SE, standard error.
*
P < .05.
†
P < .01.
‡
P < .001.
§
Omitted reference level of attribute, computed from estimated coefficients.
∥
Omitted reference level of factor.