<?xml version="1.0" encoding="UTF-8"?><!DOCTYPE article PUBLIC "-//NLM//DTD Journal Publishing DTD v2.0 20040830//EN" "journalpublishing.dtd"><article xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" dtd-version="2.0" xml:lang="en" article-type="letter"><front><journal-meta><journal-id journal-id-type="nlm-ta">JMIR Pediatr Parent</journal-id><journal-id journal-id-type="publisher-id">pediatrics</journal-id><journal-id journal-id-type="index">30</journal-id><journal-title>JMIR Pediatrics and Parenting</journal-title><abbrev-journal-title>JMIR Pediatr Parent</abbrev-journal-title><issn pub-type="epub">2561-6722</issn></journal-meta><article-meta><article-id pub-id-type="publisher-id">57041</article-id><article-id pub-id-type="doi">10.2196/57041</article-id><title-group><article-title>Social Media Use and Serious Psychological Distress Among Adolescents</article-title></title-group><contrib-group><contrib contrib-type="author" corresp="yes" equal-contrib="yes"><name name-style="western"><surname>Shimkhada</surname><given-names>Riti</given-names></name><degrees>MPH, PhD</degrees><xref ref-type="aff" rid="aff1">1</xref><xref ref-type="fn" rid="equal-contrib1">*</xref></contrib><contrib contrib-type="author" equal-contrib="yes"><name name-style="western"><surname>Ponce</surname><given-names>Ninez A</given-names></name><degrees>MPP, PhD</degrees><xref ref-type="aff" rid="aff1">1</xref><xref ref-type="aff" rid="aff2">2</xref><xref ref-type="fn" rid="equal-contrib1">*</xref></contrib></contrib-group><aff id="aff1"><institution>Center for Health Policy Research, University of California</institution>, <addr-line>Los Angeles</addr-line><addr-line>CA</addr-line>, <country>United States</country></aff><aff id="aff2"><institution>Health Policy and Management, Fielding School of Public Health, University of California</institution>, <addr-line>Los Angeles</addr-line><addr-line>CA</addr-line>, <country>United States</country></aff><contrib-group><contrib contrib-type="editor"><name name-style="western"><surname>Badawy</surname><given-names>Sherif</given-names></name></contrib></contrib-group><contrib-group><contrib contrib-type="reviewer"><name name-style="western"><surname>Hassan</surname><given-names>Ahmed</given-names></name></contrib><contrib contrib-type="reviewer"><name name-style="western"><surname>Mitra</surname><given-names>Sayan</given-names></name></contrib></contrib-group><author-notes><corresp>Correspondence to Riti Shimkhada, MPH, PhD<email>riti@ucla.edu</email></corresp><fn fn-type="equal" id="equal-contrib1"><label>*</label><p>all authors contributed equally</p></fn></author-notes><pub-date pub-type="collection"><year>2024</year></pub-date><pub-date pub-type="epub"><day>23</day><month>5</month><year>2024</year></pub-date><volume>7</volume><elocation-id>e57041</elocation-id><history><date date-type="received"><day>02</day><month>02</month><year>2024</year></date><date date-type="rev-recd"><day>15</day><month>04</month><year>2024</year></date><date date-type="accepted"><day>22</day><month>04</month><year>2024</year></date></history><copyright-statement>&#x00A9; Riti Shimkhada, Ninez A Ponce. Originally published in JMIR Pediatrics and Parenting (<ext-link ext-link-type="uri" xlink:href="https://pediatrics.jmir.org">https://pediatrics.jmir.org</ext-link>), 23.5.2024. </copyright-statement><copyright-year>2024</copyright-year><license license-type="open-access" xlink:href="https://creativecommons.org/licenses/by/4.0/"><p>This is an open-access article distributed under the terms of the Creative Commons Attribution License (<ext-link ext-link-type="uri" xlink:href="https://creativecommons.org/licenses/by/4.0/">https://creativecommons.org/licenses/by/4.0/</ext-link>), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work, first published in JMIR Pediatrics and Parenting, is properly cited. The complete bibliographic information, a link to the original publication on <ext-link ext-link-type="uri" xlink:href="https://pediatrics.jmir.org">https://pediatrics.jmir.org</ext-link>, as well as this copyright and license information must be included.</p></license><self-uri xlink:type="simple" xlink:href="https://pediatrics.jmir.org/2024/1/e57041"/><abstract><p>This Research Letter describes the increasing trend of almost-constant social media use among California adolescents and the association with serious psychological distress, focusing on the influence of familial and experiential factors.</p></abstract><kwd-group><kwd>social media</kwd><kwd>socials</kwd><kwd>youth</kwd><kwd>adolescents</kwd><kwd>teens</kwd><kwd>teenager</kwd><kwd>mental health</kwd><kwd>mental illness</kwd><kwd>mental disease</kwd><kwd>mental illnesses</kwd><kwd>psychological distress</kwd><kwd>psychological</kwd><kwd>psychology</kwd></kwd-group></article-meta></front><body><sec id="s1" sec-type="intro"><title>Introduction</title><p>Increasing recognition of the potential dangers of excessive social media use on mental health has led to numerous calls for restraint and associated legal cases, as highlighted by the recent advisory issued by the US Surgeon General [<xref ref-type="bibr" rid="ref1">1</xref>-<xref ref-type="bibr" rid="ref3">3</xref>]; however, these dangers remain understudied. We examined social media use trends between 2019 and 2021 among adolescents in California. We further examined the association between almost-constant social media use and psychological distress using 2021 data, controlling for familial dynamics and adverse childhood experiences (ACEs), which are predictors of mental health [<xref ref-type="bibr" rid="ref4">4</xref>] but have largely been overlooked in previous studies.</p></sec><sec id="s2" sec-type="methods"><title>Methods</title><sec id="s2-1"><title>Survey and Data Collection</title><p>We used the California Health Interview Survey (CHIS) 2019-2021 data sets [<xref ref-type="bibr" rid="ref5">5</xref>] for adolescents aged 12-17 years to examine trends in social media use. For a regression analysis examining the association between almost-constant social media use and psychological distress among adolescents, we used the 2021 data set with responses from 24,453 households, including 1169 participating adolescents. The CHIS randomly selects one adult to interview in each randomly sampled household, wherein households are selected using a geographically stratified address-based sample design. Following parental permission, surveys are conducted directly with a randomly sampled adolescent in the household. The survey, conducted either on the web or by telephone, includes a comprehensive set of health-related questions. Respondents are asked to report on typical daily use of social media on the following scale: less than a few times a day, a few times a day, many times a day, and almost constantly or more. We categorized this scale into a two-category variable wherein the category &#x201C;almost constantly or more&#x201D; is referred to as almost-constant social media use. Psychological distress was measured using the Kessler 6 series [<xref ref-type="bibr" rid="ref6">6</xref>]; for this analysis, we examined the category of likely having had serious psychological distress in the past year. Family connection was measured through a series of questions, including how often the adolescent felt they were able to talk to family about their feelings, how often they felt family stood by them during difficult times, how often they felt safe and protected by the adult at home, and how often they had at least two nonparent adults taking a genuine interest in them. Adolescents responding &#x201C;little to never&#x201D; to any of these questions were assigned to a group characterized by little to no family connection. Adolescents responding having had at least one ACE were assigned &#x201C;yes&#x201D; to the ACEs variable.</p></sec><sec id="s2-2"><title>Statistical Analysis</title><p>Demographic variables, including age, gender, race and ethnicity, and socioeconomic status, were included in the analysis as covariates. The data were weighted to account for the complex survey design and to generate population-level estimates. We used multivariate logistic regression models to examine the association between almost-constant social media use and serious psychological distress, controlling for demographic characteristics, family factors, and ACEs. All analyses were conducted using STATA 16.1.</p></sec><sec id="s2-3"><title>Ethical Considerations</title><p>This study used deidentified, publicly available data, which does not constitute human subjects research as defined by regulation 45 CFR 46.102 of the US Department of Health and Human Services [<xref ref-type="bibr" rid="ref7">7</xref>], and thus does not require ethics board approval. All CHIS respondents receive an initial survey invitation letter with a US $2 preincentive. Participation is voluntary and all participants provide informed consent before participating in the survey.</p></sec></sec><sec id="s3" sec-type="results"><title>Results</title><p>Almost-constant social media use for the youngest teens (aged 12-14 years) increased significantly between 2019 and 2021, whereas this increase was not noted for older teens (aged 15-17 years). Among 12-14&#x2013;year-old females, the rate of almost-constant use was 18.1% (95% CI 11.2-25.0) in 2019, 22.2% (95% CI 15.4-29.1) in 2020, and 28.9% (95% CI 20.8-37.0) in 2021; among 15-17&#x2013;year-old females, the rate of almost-constant use was 33.0% (95% CI 25.8-40.2) in 2019, 26.9% (95% CI 20.8-32.9) in 2020, and 29.1% (95% CI 20.8-37.3) in 2021. Among male adolescents, almost-constant social media use increased significantly between 2019 and 2021 for both age groups. Among 12-14&#x2013;year-old males, the rates were 11.9% (95% CI 6.2-17.6) in 2019, 22.7% (95% CI 16.4-28.9) in 2020, and 23.7% (95% CI 18.4-29.0) in 2021; among 15-17&#x2013;year-old males, the rates were 14.1% (95% CI 9.8-18.4) in 2019, 22.4% (95% CI 17.3-27.6) in 2020, and 28.9% (95% CI 22.9-34.9) in 2021. By 2021, there were no longer significant differences in almost-constant social media use according to age group.</p><p>The rates of almost-constant social media use were the highest for teens living in poverty, those who have experienced ACEs, those who reported little to no family connection, and those who reported serious psychological distress (<xref ref-type="table" rid="table1">Table 1</xref>).</p><p>Regression analyses suggested a significant positive association between almost-constant social media use and psychological distress controlling for ACEs, family connection, and demographics (<xref ref-type="table" rid="table2">Table 2</xref>).</p><table-wrap id="t1" position="float"><label>Table 1.</label><caption><p>Association of characteristics of adolescents (12-17 years old) with almost-constant social media use from the California Health Interview Survey 2021 (N=1169).</p></caption><table id="table1" frame="hsides" rules="groups"><thead><tr><td align="left" valign="bottom" colspan="2">Characteristic</td><td align="left" valign="bottom">Almost-constant social media use, % (95% CI)</td></tr></thead><tbody><tr><td align="left" valign="top" colspan="2">Total (all adolescents)</td><td align="left" valign="top">27.62 (24.19-31.35)</td></tr><tr><td align="left" valign="top" colspan="3"><bold>Age (years)</bold></td></tr><tr><td align="left" valign="top"/><td align="char" char="." valign="top">12-14</td><td align="left" valign="top">26.23 (21.48-31.61)</td></tr><tr><td align="left" valign="top"/><td align="char" char="." valign="top">15-17</td><td align="left" valign="top">28.98 (24.30-34.16)</td></tr><tr><td align="left" valign="top" colspan="3"><bold>Gender<sup><xref ref-type="table-fn" rid="table1fn1">a</xref></sup></bold></td></tr><tr><td align="left" valign="top"/><td align="left" valign="top">Female</td><td align="left" valign="top">28.97 (23.61-35.00)</td></tr><tr><td align="left" valign="top"/><td align="left" valign="top">Male</td><td align="left" valign="top">26.35 (22.40-30.72)</td></tr><tr><td align="left" valign="top" colspan="3"><bold>Federal Poverty Level (%)</bold></td></tr><tr><td align="left" valign="top"/><td align="char" char="." valign="top">&#x003C;300</td><td align="left" valign="top">33.19 (27.65-39.23)</td></tr><tr><td align="left" valign="top"/><td align="char" char="." valign="top">&#x2265;300</td><td align="left" valign="top">22.61 (19.26-26.35)</td></tr><tr><td align="left" valign="top" colspan="3"><bold>Race</bold><sup><xref ref-type="table-fn" rid="table1fn2"><bold>b</bold></xref></sup></td></tr><tr><td align="left" valign="top"/><td align="left" valign="top">Asian</td><td align="left" valign="top">28.66 (21.02-37.76)</td></tr><tr><td align="left" valign="top"/><td align="left" valign="top">Latino</td><td align="left" valign="top">30.23 (24.95-36.09)</td></tr><tr><td align="left" valign="top"/><td align="left" valign="top">Black, African American, and other</td><td align="left" valign="top">22.72 (12.81-37.04)</td></tr><tr><td align="left" valign="top"/><td align="left" valign="top">Two or more</td><td align="left" valign="top">27.94 (17.60-41.31)</td></tr><tr><td align="left" valign="top"/><td align="left" valign="top">White</td><td align="left" valign="top">23.17 (18.21-29.01)</td></tr><tr><td align="left" valign="top" colspan="3"><bold>Serious psychological distress</bold></td></tr><tr><td align="left" valign="top"/><td align="left" valign="top">Yes</td><td align="left" valign="top">37.36 (31.09-44.09)</td></tr><tr><td align="left" valign="top"/><td align="left" valign="top">No</td><td align="left" valign="top">22.63 (19.27-26.38)</td></tr><tr><td align="left" valign="top" colspan="3"><bold>Adverse childhood experiences</bold></td></tr><tr><td align="left" valign="top"/><td align="left" valign="top">Yes</td><td align="left" valign="top">36.17 (30.72-42.01)</td></tr><tr><td align="left" valign="top"/><td align="left" valign="top">No</td><td align="left" valign="top">20.95 (17.48-24.91)</td></tr><tr><td align="left" valign="top" colspan="3"><bold>Family connection</bold></td></tr><tr><td align="left" valign="top"/><td align="left" valign="top">Little to none</td><td align="left" valign="top">34.02 (28.47-40.04)</td></tr><tr><td align="left" valign="top"/><td align="left" valign="top">More than little</td><td align="left" valign="top">22.21 (18.42-26.52)</td></tr></tbody></table><table-wrap-foot><fn id="table1fn1"><p><sup>a</sup>While the California Health Interview Survey collects data on nonbinary gender, for sample size considerations, we report only male and female categories here.</p></fn><fn id="table1fn2"><p><sup>b</sup>The sample size was too small to produce reliable estimates for the Black/African American population alone, American Indian or Alaska Native, and Native Hawaiian or Pacific Islander populations.</p></fn></table-wrap-foot></table-wrap><table-wrap id="t2" position="float"><label>Table 2.</label><caption><p>Association between almost-constant social media use and serious psychological distress among adolescents (aged 12-17 years) from the California Health Interview Survey 2021 (N=1169).</p></caption><table id="table2" frame="hsides" rules="groups"><thead><tr><td align="left" valign="bottom" colspan="2">Variable</td><td align="left" valign="top">Adjusted odds ratio (95% CI)</td><td align="left" valign="top"><italic>P</italic> value</td></tr></thead><tbody><tr><td align="left" valign="top" colspan="3"><bold>Social media use per day</bold></td><td align="left" valign="top">.003</td></tr><tr><td align="left" valign="top"/><td align="left" valign="top">Almost constant</td><td align="left" valign="top">1.673 (1.204-2.323)</td><td align="left" valign="top"/></tr><tr><td align="left" valign="top"/><td align="left" valign="top">Less than almost constant</td><td align="left" valign="top">reference</td><td align="left" valign="top">&#x2003;</td></tr><tr><td align="left" valign="top" colspan="3"><bold>Age (years)</bold></td><td align="left" valign="top">.003</td></tr><tr><td align="left" valign="top"/><td align="char" char="." valign="top">12-14</td><td align="left" valign="top">reference</td><td align="left" valign="top">&#x2003;</td></tr><tr><td align="left" valign="top"/><td align="char" char="." valign="top">15-17</td><td align="left" valign="top">1.710 (1.205-2.429)</td><td align="left" valign="top"/></tr><tr><td align="left" valign="top" colspan="3"><bold>Gender<sup><xref ref-type="table-fn" rid="table2fn1">a</xref></sup></bold></td><td align="left" valign="top">.005</td></tr><tr><td align="left" valign="top"/><td align="left" valign="top">Female</td><td align="left" valign="top">1.597 (1.155-2.209)</td><td align="left" valign="top"/></tr><tr><td align="left" valign="top"/><td align="left" valign="top">Male</td><td align="left" valign="top">reference</td><td align="left" valign="top">&#x2003;</td></tr><tr><td align="left" valign="top" colspan="3"><bold>Federal Poverty Level (%)</bold></td><td align="left" valign="top">.92</td></tr><tr><td align="left" valign="top"/><td align="char" char="." valign="top">&#x003C;300</td><td align="left" valign="top">1.017 (0.709-1.460)</td><td align="left" valign="top"/></tr><tr><td align="left" valign="top"/><td align="char" char="." valign="top">&#x2265;300</td><td align="left" valign="top">reference</td><td align="left" valign="top">&#x2003;</td></tr><tr><td align="left" valign="top" colspan="3"><bold>Race</bold><sup><xref ref-type="table-fn" rid="table2fn2"><bold>b</bold></xref></sup></td><td align="left" valign="top">&#x2003;</td></tr><tr><td align="left" valign="top"/><td align="left" valign="top">Asian</td><td align="left" valign="top">0.641 (0.377-1.089)</td><td align="left" valign="top">.10</td></tr><tr><td align="left" valign="top"/><td align="left" valign="top">Latino</td><td align="left" valign="top">0.674 (0.469-0.967)</td><td align="left" valign="top">.03</td></tr><tr><td align="left" valign="top"/><td align="left" valign="top">Black, African American, and other</td><td align="left" valign="top">0.807 (0.357-1.824)</td><td align="left" valign="top">.60</td></tr><tr><td align="left" valign="top"/><td align="left" valign="top">Two or more</td><td align="left" valign="top">1.133 (0.617-2.079)</td><td align="left" valign="top">.68</td></tr><tr><td align="left" valign="top"/><td align="left" valign="top">White</td><td align="left" valign="top">reference</td><td align="left" valign="top">&#x2003;</td></tr><tr><td align="left" valign="top" colspan="3"><bold>Adverse childhood experiences</bold></td><td align="left" valign="top">&#x003C;.001</td></tr><tr><td align="left" valign="top"/><td align="left" valign="top">Yes</td><td align="left" valign="top">2.403 (1.736-3.327)</td><td align="left" valign="top"/></tr><tr><td align="left" valign="top"/><td align="left" valign="top">No</td><td align="left" valign="top">reference</td><td align="left" valign="top">&#x2003;</td></tr><tr><td align="left" valign="top" colspan="3"><bold>Family connection</bold></td><td align="left" valign="top">&#x003C;.001</td></tr><tr><td align="left" valign="top"/><td align="left" valign="top">Little to none</td><td align="left" valign="top">2.171 (1.502-3.139)</td><td align="left" valign="top"/></tr><tr><td align="left" valign="top"/><td align="left" valign="top">More than little</td><td align="left" valign="top">reference</td><td align="left" valign="top">&#x2003;</td></tr></tbody></table><table-wrap-foot><fn id="table2fn1"><p><sup>a</sup>While the California Health Interview Survey collects data on nonbinary gender, for sample size considerations, we report only male and female categories here.</p></fn><fn id="table2fn2"><p><sup>b</sup>The sample size was too small to produce reliable estimates for the Black/African American population alone, American Indian or Alaska Native, and Native Hawaiian or Pacific Islander populations.</p></fn></table-wrap-foot></table-wrap></sec><sec id="s4" sec-type="discussion"><title>Discussion</title><p>Our work is the first to examine the association between social media use and psychological distress controlling for ACEs and the adolescent-reported level of family connection, both of which are significantly associated with psychological distress [<xref ref-type="bibr" rid="ref4">4</xref>]. Even when controlling for these and other demographic variables, almost-constant social media use remained significantly associated with psychological distress. Our key limitation is the cross-sectional nature of the data. Other limitations include the analysis of self-reported data on social media use, which may be subject to recall or social desirability bias, and possible other confounders not included in the analysis. Our work is consistent with prior research that finds increasing trends in use of social media among the youngest teens [<xref ref-type="bibr" rid="ref8">8</xref>] and potential adverse mental health impacts from high or almost-constant social media use [<xref ref-type="bibr" rid="ref9">9</xref>-<xref ref-type="bibr" rid="ref12">12</xref>].</p></sec></body><back><notes><sec><title>Data Availability</title><p>The data sets analyzed for this study are publicly available from the UCLA Center for Health Policy Research's California Health Interview Survey Public Use Files (PUFs) website [<xref ref-type="bibr" rid="ref5">5</xref>].</p></sec></notes><fn-group><fn fn-type="conflict"><p>None declared.</p></fn></fn-group><glossary><title>Abbreviations</title><def-list><def-item><term id="abb1">ACE</term><def><p>adverse childhood experience</p></def></def-item><def-item><term id="abb2">CHIS</term><def><p>California Health Interview 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