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Table 6 Interaction between computer exposure variables and mobile phone use at baseline, and symptoms of depression: two items (new cases), at 1-year follow-up

From: Computer use and stress, sleep disturbances, and symptoms of depression among young adults – a prospective cohort study

  MEN WOMEN
  Mobile phone use Mobile phone use
  Low Medium High Low Medium High
Computer exposure Cases (%) PR (95% CI) Cases (%) PR (95% CI) Cases (%) PR (95% CI) Cases (%) PR (95% CI) Cases (%) PR (95% CI) Cases (%) PR (95% CI)
CU without breaks             
High 12 (17) 0.9 (0.46–1.94) 4 (22) 0 (0) 10 (29) 1.9 (1.06–3.40) 5 (38) 2.4 (1.13–5.09) 6 (40) 2.3 (1.18–4.58)
Medium 18 (14) 1.0 (0.51–1.81) 7 (16) 1.2 (0.52–2.62) 3 (9) 33 (27) 1.7 (1.09–2.52) 14 (28) 1.8 (1.04–3.06) 14 (39) 2.3 (1.38–3.87)
Low 15 (14) 1.0 (ref) 9 (21) 1.8 (0.85–3.75) 8 (18) 1.7 (0.76–3.68) 37 (17) 1.0 (ref) 19 (22) 1.3 (0.78–2.08) 20 (29) 1.6 (1.02–2.62)
  1. Participants who reported symptoms at baseline were excluded from analysis of the mental health outcome concerned. Prevalence of mental health symptoms (cases and %) at 1-year follow-up in each exposure category is shown. The prevalence ratios (PRs) with 95 % confidence intervals (CIs) were adjusted for relationship status, educational level, and occupation. PRs with a CI not including 1.00 (before rounding) are given in bold. Results of analyses with fewer than five cases are not presented, indicated as “…”.