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Table 2 Associations between suicidal ideation with smoking status at the 2007 survey, the Millennium Cohort Study, n = 63,028

From: Multiple imputation validation study: addressing unmeasured survey data in a longitudinal design

  Smoking status (ref: never)*
  Former Current
  AOR (95% CI) AOR (95% CI)
Self-reported 1.23 (1.12, 1.36) 1.87 (1.68, 2.08)
PHQ-BIN 1.31 (1.15, 1.48) 1.48 (1.62, 2.15)
PHQ-ORD 1.34 (1.23, 1.46) 2.01 (1.83, 2.20)
ALL-BIN 1.23 (1.05, 1.44) 1.86 (1.56, 2.22)
ALL-ORD 1.36 (1.24, 1.48) 2.09 (1.90, 2.29)
  1. All confidence intervals of AORs for the imputed suicidal ideation with smoking status overlapped with the 95% CI for the AOR observed for the self-reported suicidal ideation with smoke status
  2. *Never smoker: had not smoked at least 100 cigarettes; former smoker: had smoked at least 100 cigarettes and had successfully quit smoking; current smoker: had smoked at least 100 cigarettes and had not successfully quit
  3. Adjusted for sex, age, race/ethnicity, marital status, and education
  4. AOR, adjusted odds ratio; CI, confidence interval; PCL-C, PTSD Checklist−Civilian Version; PHQ, Patient Health Questionnaire; PTSD, posttraumatic stress disorder
  5. Self-reported suicidal ideation was indicated if reported “several days” or more to “thoughts that you would be better off dead or hurting yourself in some way”
  6. PHQ-BIN model: treated suicidal ideation as a dichotomous variable and included the remaining 8 PHQ items in the imputation model
  7. PHQ-ORD model: treated suicidal ideation as a 4-level variable and included the remaining 8 PHQ items in the imputation model
  8. ALL-BIN model: treated suicidal ideation as a dichotomous variable and included the 8 PHQ items and previously identified factors from the literature: sex, age, race/ethnicity, marital status, education attainment, 10 individual items from the RAND physical functioning module, 17 individual items and PTSD screener from the PCL-C, smoking status, sleep duration, and 5 alcohol use items from the PHQ [27,28,29,30]
  9. ALL-ORD model: treated suicidal ideation as a 4-level variable and included the 8 PHQ items and previously identified factors from the literature: sex, age, race/ethnicity, marital status, education attainment, 10 individual items from the RAND physical functioning module, 17 individual items and PTSD screener from the PCL-C, smoking status, sleep duration, and 5 alcohol use items from the PHQ [27,28,29,30]