Test-retest reliability by domain.

<p>Test-retest reliability by domain.</p

Means, confidence intervals and group differences of subscales by immigrant generation and age at immigration.

<p>Means, confidence intervals and group differences of subscales by immigrant generation and age at immigration.</p

Results of factor analyses, psychometric properties of subscales.

<p>Results of factor analyses, psychometric properties of subscales.</p

Flowchart for literature review.

<p>^a These studies used a combination of measures to assess a proxy of acculturation, such as language of survey administration, or some combination of ethnicity, language and/or nativity. ^b These studies were excluded based on methodological grounds. They were either qualitative, mixed-methods, interview administered questionnaires or commentaries in journals. ^c These studies were unrelated to the current study. These included validating a questionnaire in a new population or did not investigate acculturation</p

Bland-Altman Plot of differences between baseline and follow up over the mean response value for each domain.

<p>Bland-Altman Plot of differences between baseline and follow up over the mean response value for each domain.</p

Description of the sample used for pilot testing.

<p>Description of the sample used for pilot testing.</p

Flowchart for selecting items for inclusion in the questionnaire.

<p>^a These questions were identical between questionnaires, i.e. “How well do you speak English”. ^b Theses questions were unidimensional, i.e. “Do you prefer to speak English or Spanish”. ^c These questions asked about items that would be beyond the scope of youth aged 10–16, such as “I communicate with my spouse in English”. ^d These questions were duplicative, such as “I speak English 1) at home, 2) at work, 3) with my mother, 4) with my father” etc.</p