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No Evidence for Long-Term Causal Associations Between Symptoms of Premature Ejaculation and Symptoms of Anxiety, Depression, and Sexual Distress in a Large, Population-Based Longitudinal Sample.
Ventus D, Gunst A, Kärnä A, Jern P. Ventus D, et al. Among authors: karna a. J Sex Res. 2017 Feb;54(2):264-272. doi: 10.1080/00224499.2016.1255301. Epub 2016 Dec 16. J Sex Res. 2017. PMID: 27982691
Being bullied by same- versus other-sex peers: does it matter for adolescent victims?
Sainio M, Veenstra R, Little TD, Kärnä A, Rönkkö M, Salmivalli C. Sainio M, et al. Among authors: karna a. J Clin Child Adolesc Psychol. 2013;42(4):454-66. doi: 10.1080/15374416.2013.769172. Epub 2013 Mar 4. J Clin Child Adolesc Psychol. 2013. PMID: 23458338 Clinical Trial.
Female sexual function varies over time and is dependent on partner-specific factors: a population-based longitudinal analysis of six sexual function domains.
Gunst A, Ventus D, Kärnä A, Salo P, Jern P. Gunst A, et al. Among authors: karna a. Psychol Med. 2017 Jan;47(2):341-352. doi: 10.1017/S0033291716002488. Epub 2016 Oct 21. Psychol Med. 2017. PMID: 27766993
A Longitudinal Analysis of Premature Ejaculation Symptoms Raises Concern Regarding the Appropriateness of a "Lifelong" Subtype.
Ventus D, Ristilä M, Gunst A, Kärnä A, Arver S, Piha J, Jern P. Ventus D, et al. Among authors: karna a. Eur Urol Focus. 2017 Apr;3(2-3):243-245. doi: 10.1016/j.euf.2016.01.015. Epub 2016 Feb 17. Eur Urol Focus. 2017. PMID: 28753750
This longitudinal study included data for untreated respondents from a population-based sample (sample 1) and a sample of patients diagnosed with lifelong PE (sample 2). ...A subjective perception of change in ejaculatory latency was reported by 47% (n=397) o …
This longitudinal study included data for untreated respondents from a population-based sample (sample 1) and a sample of pati …
Reply from Authors re: Marcel D. Waldinger. The Dangers That Threaten Current Research of Premature Ejaculation: Using Validated Questionnaires, Performing Conjuring Tricks with Statistics, and Refusing to Use Real-Time Stopwatch Measurements of Intravaginal Ejaculation Latency Time. Eur Urol Focus. In press. http://dx.doi.org/10.1016/j.euf.2016.02.008.
Ventus D, Ristilä M, Gunst A, Kärnä A, Arver S, Piha J, Jern P. Ventus D, et al. Among authors: karna a. Eur Urol Focus. 2017 Oct;3(4-5):510-513. doi: 10.1016/j.euf.2016.04.013. Epub 2016 May 13. Eur Urol Focus. 2017. PMID: 28753761 No abstract available.
A Longitudinal Assessment of Associations Between Women's Tendency to Pretend Orgasm, Orgasm Function, and Intercourse-Related Pain in Different Partner Relationship Constellations.
Jern P, Hakala O, Kärnä A, Gunst A. Jern P, et al. Among authors: karna a. Arch Sex Behav. 2018 Apr;47(3):671-679. doi: 10.1007/s10508-017-1117-z. Epub 2017 Dec 5. Arch Sex Behav. 2018. PMID: 29209890
Vibrator-Assisted Start-Stop Exercises Improve Premature Ejaculation Symptoms: A Randomized Controlled Trial.
Ventus D, Gunst A, Arver S, Dhejne C, Öberg KG, Zamore-Söderström E, Kärnä A, Jern P. Ventus D, et al. Among authors: karna a. Arch Sex Behav. 2020 Jul;49(5):1559-1573. doi: 10.1007/s10508-019-01520-0. Epub 2019 Nov 18. Arch Sex Behav. 2020. PMID: 31741252 Free PMC article. Clinical Trial.
Going to scale: a nonrandomized nationwide trial of the KiVa antibullying program for grades 1-9.
Kärnä A, Voeten M, Little TD, Poskiparta E, Alanen E, Salmivalli C. Kärnä A, et al. J Consult Clin Psychol. 2011 Dec;79(6):796-805. doi: 10.1037/a0025740. Epub 2011 Oct 3. J Consult Clin Psychol. 2011. PMID: 21967491 Clinical Trial.
The program effects were examined by calculating odds ratios based on a cohort-longitudinal design, correcting the standard errors for clustering. ...CONCLUSIONS: Generalized to the Finnish population of 500,000 students, this would mean a reduction of approximately …
The program effects were examined by calculating odds ratios based on a cohort-longitudinal design, correcting the standard errors fo …
Bilingualism and performance on two widely used developmental neuropsychological test batteries.
Karlsson LC, Soveri A, Räsänen P, Kärnä A, Delatte S, Lagerström E, Mård L, Steffansson M, Lehtonen M, Laine M. Karlsson LC, et al. Among authors: karna a. PLoS One. 2015 Apr 29;10(4):e0125867. doi: 10.1371/journal.pone.0125867. eCollection 2015. PLoS One. 2015. PMID: 25922937 Free PMC article.
The present study investigated the effect of bilingualism on the two widely used developmental neuropsychological test batteries Wechsler Intelligence Scale for Children - Fourth Edition (WISC-IV) and A Developmental Neuropsychological Assessment, Second Edition (NEPSY-II) …
The present study investigated the effect of bilingualism on the two widely used developmental neuropsychological test batteries Wechsler In …
Intrapersonal and interpersonal risk factors for peer victimization in immigrant youth in Finland.
Strohmeier D, Kärnä A, Salmivalli C. Strohmeier D, et al. Among authors: karna a. Dev Psychol. 2011 Jan;47(1):248-58. doi: 10.1037/a0020785. Dev Psychol. 2011. PMID: 21058827
This study (a) compared native Finns and immigrant children with respect to different forms of peer victimization and (b) tested whether intrapersonal (e.g., depression) and interpersonal (e.g., peer rejection) sample was drawn from the first phase of a large interv …
This study (a) compared native Finns and immigrant children with respect to different forms of peer victimization and (b) tested whet …
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