Early Communication Intervention for Toddlers With Hearing Loss

Phase 2

Completed

Conditions: Hearing Loss, Bilateral

Registration Number: NCT03803943

Lead Sponsor: Northwestern University

Brief Summary: Improving spoken language outcomes for children with hearing loss has important public health implications. This is a randomized clinical trial of 96 children with hearing loss that examines the effects of a parent-implemented early communication intervention on prelinguistic and spoken language outcomes. The study is open for national recruitment. Parents participate via video call with their child and receive technology to assist with virtual visits.

Detailed Description: While children with hearing loss (HL) are experiencing greater gains in spoken language than ever before, considerable variability exists and many children with HL continue to have poorer language skills than their hearing peers. Critical to reducing this variability is the identification of: (a) effective early communication interventions for children with HL and (b) child and parent characteristics that influence intervention outcomes (moderators and mediators). However, to date, only the pilot study for this proposed study has directly examined the effects of an early communication intervention for children with HL within the context of a randomized clinical trial. The overarching goals of the proposed study are to: (a) evaluate the effects of teaching parents to use communication support strategies on child communication outcomes and (b) examine parent and child characteristics that moderate and mediate intervention outcomes. The central hypothesis is that systematic parent training will result in greater parental use of communication support strategies, greater child pre-symbolic communicative acts, and greater child spoken language outcomes. The specific aims include: (a) comparing parent use of communication support strategies and child pre-symbolic communicative acts between intervention and control groups during and immediately following intervention (from 12 to 18 months of age), (b) examining parent (identification of child communication) and child (sensitivity to social contingency; attention to speech) moderators of intervention outcomes; (c) comparing parent use of communication support strategies and child spoken language outcomes between intervention and control groups after intervention (from 18 and 36 months of age); and (d) examining parent (use of communication support strategies) and child (pre-symbolic communicative acts) mediators of intervention outcomes. The proposed study will enroll 96 children with mild to profound bilateral hearing loss. Children will enroll in the study around 12 months of age and will be randomly assigned to either a parent-implemented communication intervention (PICT) or a control group. Children in both groups will be assessed: (a) at 12 months of age (immediately before intervention), (b) at 18 months of age (immediately after intervention), and (c) at 36 months of age (18 months after the end of intervention). Children in the intervention group will receive weekly, 1-hour intervention sessions for 6-months that: (a) are delivered during an important prelinguistic period of language development, (b) incorporate visual, interactive, responsive, and linguistically stimulating communication support strategies that are associated with stronger language skills in children with HL, and (c) include systematic parent training found to be effective in teaching parents to use communication support skills in children with language delays. The proposed research is significant because effective early communication intervention is likely to reduce persistent language delays in children with HL, thereby advancing the field of childhood hearing loss, where there is a striking paucity of rigorous communication intervention research.

Recruitment & Eligibility

Status: COMPLETED

Sex: All

Target Recruitment: 105

Inclusion Criteria

have bilateral, congenital HL as measured by a review of medical records
enrollment in the study between 12 and 18 months of age
have no known additional disabilities (e.g., Down syndrome, cerebral palsy, seizure disorder, blindness, etc.) as measured by review of medical records and parent report
have English as the primary language spoken at home
have one parent with normal hearing, and (f) are exposed to some degree of spoken language by their parents (total communication, auditory/oral)

Exclusion Criteria

Not provided

Study & Design

Study Type: INTERVENTIONAL

Study Design: PARALLEL

Primary Outcome Measures

Name	Time	Method
Use of Communication Support Strategies - Parent	Change from Baseline to Month 7	Parent use of communication support strategies was measured from a 12-minute parent-child interaction in which the dyad plays using a standard set of toys. Interactions were video recorded and coded for 13 items representing subcomponents of seven communication support strategies. Each item was rated on a 5-point scale (1 = novice use, 5 = expert use), reflecting the quality and proficiency of parent strategy use. Items were averaged to yield a Total Composite Score (Min = 1, Max = 5), with higher scores indicating more proficient and consistent use of communication strategies.
Total Number of Communicative Acts From the Language Sample - Child	Change from Baseline to Month 7	During the 10-minute interaction, the child played with toys and wordless picture books. A research assistant transcribed and coded all communicative acts. Each communicative act was assigned a weight reflecting its developmental complexity: gestures and vocalizations = 1 point, single words = 2 points, and multiple-word utterances = 3 points. The Total Weighted Frequency Score (Min = 0, Max = NA) is the sum of the weighted frequency of each act, with higher scores reflecting more frequent and complex communicative acts.
Communication and Symbolic Behavior Scales Score - Child	Month 7	The child is presented with 6 different activities (wind-up toy, balloon, bubbles, jar, books, play) designed to elicit child communication. The interaction is video recorded and then scored for 20 items across 7 communication scales (emotion and eye gaze, communication, gestures, sounds, words, understanding, and object use). The weighted raw scores for each of the 7 scales were grouped into 3 clusters (social, speech, and symbolic) and combined into a total raw score (min = 0; max = 113). Higher scores indicate better skills.

Secondary Outcome Measures

Name	Time	Method
Use of Communication Support Strategies - Parent	Change from Baseline to Month 24	Parent use of communication support strategies was measured from a 12-minute parent-child interaction in which the dyad plays using a standard set of toys. Interactions were video recorded and coded for 13 items representing subcomponents of seven communication support strategies. Each item was rated on a 5-point scale (1 = novice use, 5 = expert use), reflecting the quality and proficiency of parent strategy use. Items were averaged to yield a Total Composite Score (Min = 1, Max = 5), with higher scores indicating more proficient and consistent use of communication strategies.
Spoken Words - Child	Change from Baseline to Month 24	Total number of spoken words will be collected using two measures that will be combined used confirmatory factory analysis. Total Number of Words Said from the MacArthur-Bates Communicative Development Inventory: Words and Sentences and the total number of different spoken word roots from a 10-minute language sample in which an assessor plays with the child following a standardized protocol.
Expressive Communication Standard Score on the Preschool Language Scale - 5th Edition - Child	Month 24	The child is presented with different receptive tasks, such as following simple directions and pointing to pictures, until the child provides an incorrect response to six consecutive items. A total standard score is calculated based on the raw score and the child's age (min = 50; max = 150). Higher score indicate better outcomes.
Auditory Comprehension Standard Score on the Preschool Language Scale - 5th Edition - Child	Month 24	The child is presented with different expressive tasks, such as labeling pictures, until the child provides an incorrect response to six consecutive items. A total standard score is calculated based on the raw score and the child's age (min = 50; max = 150). Higher Scores indicate better outcomes.