Christina Persson

Dr. Christina Persson

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Research Focus & Metrics

Academic Career Length

27Years (2000-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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23 November 2004 in European Journal of Pediatrics
Verified
Journal Article
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SOSolveig Oskarsdottir
Solveig Oskarsdottir
CPChristina Persson
Christina Persson
BEBengt O. Eriksson
Bengt O. Eriksson
AFAnders Fasth
Anders Fasth

1 July 2009 in The Cleft Palate Craniofacial Journal
Verified
Journal Article
Closed access
ALA. Lohmander
A. Lohmander
EWE. Willadsen
E. Willadsen
CPChristina Persson
Christina Persson
GHG. Henningsson
G. Henningsson
MBM. Bowden
M. Bowden
BHB. Hutters
B. Hutters
Objective: To present the methodology for speech assessment in the Scandcleft project and discuss issues from a pilot study. Design: Description of methodology and blinded test for speech assessment. Speech samples and instructions for data collection and analysis for comparisons of speech outcomes across five included languages were developed and tested. Participants and Materials: Randomly selected video recordings of 10 5-year-old children from each language (n = 50) were included in the project. Speech material consisted of test consonants in single words, connected speech, and syllable chains with nasal consonants. Five experienced speech and language pathologists participated as observers. Main Outcome Measures: Narrow phonetic transcription of test consonants translated into cleft speech characteristics, ordinal scale rating of resonance, and perceived velopharyngeal closure (VPC). A velopharyngeal composite score (VPC-sum) was extrapolated from raw data. Intra-agreement comparisons were performed. Results: Range for intra-agreement for consonant analysis was 53% to 89%, for hypernasality on high vowels in single words the range was 20% to 80%, and the agreement between the VPC-sum and the overall rating of VPC was 78%. Conclusions: Pooling data of speakers of different languages in the same trial and comparing speech outcome across trials seems possible if the assessment of speech concerns consonants and is confined to speech units that are phonetically similar across languages. Agreed conventions and rules are important. A composite variable for perceptual assessment of velopharyngeal function during speech seems usable; whereas, the method for hypernasality evaluation requires further testing.

1 January 2008 in The Cleft Palate Craniofacial Journal
Verified
Journal Article
Closed access
ALAnette Lohmander
Anette Lohmander
CPChristina Persson
Christina Persson
Objective: To describe speech production longitudinally in a group of children with unilateral cleft lip and palate (UCLP). Participants: Twenty consecutive children with UCLP and nine age-matched children without clefts in a comparison group. Intervention: A two-stage palatal repair procedure with soft palate closure at 6 months and hard palate repair at 3 to 4 years. Main Outcome Measures: Percent correct consonants (PCC), percent correct places (PCP), and percent correct manners (PCM) at 3, 5, and 7 years of age. Cleft speech errors at the same ages. Previously collected data on number of consonant tokens, consonant types, frequency of occurrence of places and manners of articulation at 18 months. Results: PCC and PCP were significantly lower in the UCLP group than in the comparison group at all ages. Number of consonant types and frequency of occurrence of dental plosives at 18 months correlated significantly with PCC at age 3. A high frequency of velar plosives at 18 months correlated significantly with a high prevalence of retracted oral articulation (dental/alveolar to palatal or velar) at both 3 and 5 years of age. Conclusions: The UCLP group performed worse than the comparison group at all ages. A high occurrence of dental plosives as well as a high number of consonant types in babbling and first words seem to be good indicators for better consonant production in later speech. The same prevalence of retracted oral articulation as in previous studies is attributed to the surgical technique.

2 January 2017 in Journal of Plastic Surgery and Hand Surgery
Verified
Journal Article
Closed access
EWElisabeth Willadsen
Elisabeth Willadsen
ALAnette Lohmander
Anette Lohmander
CPChristina Persson
Christina Persson
ILInger Lundeborg
Inger Lundeborg
SASuvi Alaluusua
Suvi Alaluusua
GSGunvor Semb
Gunvor Semb
Background and aim: Normal articulation before school start is a main objective in cleft palate treatment. The aim was to investigate if differences exist in consonant proficiency at age 5 years between children with unilateral cleft lip and palate (UCLP) randomised to different surgical protocols for primary palatal repair. A secondary aim was to estimate burden of care in terms of received additional secondary surgeries and speech therapy. Design: Three parallel group, randomised clinical trials were undertaken as an international multicentre study by 10 cleft teams in five countries: Denmark, Finland, Norway, Sweden, and the UK. Methods: Three different surgical protocols for primary palatal repair were tested against a common procedure in the total cohort of 448 children born with non-syndromic UCLP. Speech audio- and video-recordings of 391 children (136 girls and 255 boys) were available and transcribed phonetically. The main outcome measure was Percent Consonants Correct (PCC) from blinded assessments. Results: In Trial 1, arm A showed statistically significant higher PCC scores (82%) than arm B (78%) (p = .045). No significant differences were found between prevalences in Trial 2, A: 79%, C: 82%; or Trial 3, A: 80%, D: 85%. Across all trials, girls achieved better PCC scores, excluding s-errors, than boys (91.0% and 87.5%, respectively) (p = .01). Conclusions: PCC scores were higher in arm A than B in Trial 1, whereas no differences were found between arms in Trials 2 or 3. The burden of care in terms of secondary pharyngeal surgeries, number of fistulae, and speech therapy visits differed. Trial registration: ISRCTN29932826.

22 August 2016 in Clinical Linguistics & Phonetics
Verified
Journal Article
Closed access
ALAnette Lohmander
Anette Lohmander
ILInger Lundeborg
Inger Lundeborg
CPChristina Persson
Christina Persson
Normative language-based data are important for comparing speech performances of clinical groups. The Swedish Articulation and Nasality Test (SVANTE) was developed to enable a detailed speech assessment. This study’s aim was to present normative data on articulation and nasality in Swedish speakers. Single word production, sentence repetition and connected speech were collected using SVANTE in 443 individuals. Mean (SD) and prevalences in the groups of 3-, 5-, 7-, 10-, 16- and 19-year-olds were calculated from phonetic transcriptions or ordinal rating. For the 3- and 5-year-olds, a consonant inventory was also determined. The mean percent of oral consonants correct ranged from 77% at age 3 to 99% at age 19. At age 5, a mean of 96% was already reached, and the consonant inventory was established except for /s/, /r/, /ɕ/. The norms on the SVANTE, also including a short version, will be useful in the interpretation of speech outcomes.

2 January 2017 in Journal of Plastic Surgery and Hand Surgery
Verified
Journal Article
Closed access
ALAnette Lohmander
Anette Lohmander
CPChristina Persson
Christina Persson
EWElisabeth Willadsen
Elisabeth Willadsen
ILInger Lundeborg
Inger Lundeborg
SASuvi Alaluusua
Suvi Alaluusua
GSGunvor Semb
Gunvor Semb
Background and aim: Adequate velopharyngeal function and speech are main goals in the treatment of cleft palate. The objective was to investigate if there were differences in velopharyngeal competency (VPC) and hypernasality at age 5 years in children with unilateral cleft lip and palate (UCLP) operated on with different surgical methods for primary palatal repair. A secondary aim was to estimate burden of care in terms of received additional secondary surgeries and speech therapy. Design: Three parallel group, randomised clinical trials were undertaken as an international multicentre study by 10 cleft teams in five countries: Denmark, Finland, Sweden, Norway, and the UK. Methods: Three different surgical protocols for primary palatal repair were tested against a common procedure in the total cohort of 448 children born with a non-syndromic UCLP. Speech audio and video recordings of 391 children (136 girls, 255 boys) were available and perceptually analysed. The main outcome measures were VPC and hypernasality from blinded assessments. Results: There were no statistically significant differences between the prevalences in the arms in any of the trials. VPC: Trial 1, A: 58%, B: 61%; Trial 2, A: 57%, C: 54%; Trial 3, A: 35%, D: 51%. No hypernasality: Trial 1, A: 54%, B: 44%; Trial 2, A: 47%, C: 51%; Trial 3, A: 34%, D: 49%. Conclusions: No differences were found regarding VPC and hypernasality at age 5 years after different methods for primary palatal repair. The burden of care in terms of secondary pharyngeal surgeries, number of fistulae, and speech therapy visits differed. Trial registration: ISRCTN29932826.