Table 2.
Descriptive Statistics and Group Differences in Key Baseline Variables as a Function of Panic Disorder Status.
| Mean (SD) or % | Observed Range |
Test for Group Difference | |
|---|---|---|---|
| Sex (% female) | 46.6% | χ2 = .946, p = .42 | |
| Positive Panic Disorder Group | 36.2% | ||
| Negative Panic Disorder Group | 63.8% | ||
| Age | 29.12 (11.79) | 18 – 62 | t(56) = −.26, p = .79 |
| Positive Panic Disorder Group | 29.67 (11.41) | 18 – 54 | |
| Negative Panic Disorder Group | 28.81 (12.15) | 18 – 62 | |
| Group Assignment (% SMD) | χ2 = .18, p = .79 | ||
| Positive Panic Disorder Group | 42.9% | ||
| Negative Panic Disorder Group | 48.6% | ||
| Cigarettes Smoked Daily | 19.72 (7.99) | 7–50 | t(56) = 1.39, p = .17 |
| Positive Panic Disorder Group | 17.81 (5.57) | 9–30 | |
| Negative Panic Disorder Group | 20.8 (12.15) | 7–50 | |
| Nicotine Dependence | 3.93 (1.72) | 0–8 | t(56) = .09, p = .93 |
| Positive Panic Disorder Group | 3.90 (1.67) | 1–8 | |
| Negative Panic Disorder Group | 3.95 (1.76) | 0–7 | |
| Age First Smoked | 14.25 (3.97) | 8–39 | t(55) = 1.55, p = .13 |
| Positive Panic Disorder Group | 13.19 (2.29) | 8–18 | |
| Negative Panic Disorder Group | 14.86 (4.59) | 9–39 | |
| Age Regular Smoker | 16.40 (3.61) | 10–39 | t(55) = 1.03, p = .31 |
| Positive Panic Disorder Group | 15.76 (2.28) | 12–22 | |
| Negative Panic Disorder Group | 16.78 (4.18) | 10–39 | |
| Years Regular Smoker | 11.96 (10.98) | 1–48 | t(55) = −.67, p = .51 |
| Positive Panic Disorder Group | 13.24 (11.28) | 2–39 | |
| Negative Panic Disorder Group | 11.22 (10.89) | 1–48 | |
| PDSS Total Score | |||
| Positive Panic Disorder Group | 11.20 (3.84) | 4–17 | t(54) = −9.07, p < .001, d = 2.55 |
| Negative Panic Disorder Group | 1.64 (3.67) | 0–16 | |
| AUDIT Total Score | 8.88 (5.10) | 2–22 | t(38) = −2.31, p < .05, d = .71 |
| Positive Panic Disorder Group | 11.29 (5.98) | 3–22 | |
| Negative Panic Disorder Group | 7.58 (4.13) | 2–18 | |
| Marijuana Use (Past 30 days – %Yes) | 55.3% | χ2 = .74, p = .54 | |
| Positive Panic Disorder Group | 47.1% | ||
| Negative Panic Disorder Group | 60.0% | ||
| Negative Affectivity | 23.78 (8.71) | 8–39 | t(56) = −5.22, p < .001, d = 1.45 |
| Positive Panic Disorder Group | 30.33 (6.70) | 16–39 | |
| Negative Panic Disorder Group | 20.05 (7.47) | 8–36 | |
Note: SMD = Smoking Deprivation Group; Cigarettes Smoked Daily = Number reported smoking upon study entry; CO PPM = Parts Per Million of Carbon Monoxide in Lungs at Baseline Indexed with a Carbon Monoxide Monitor (Bedfont Smokylizer, SN: A36688); Nicotine Dependence = Fagerstöm Test for Nicotine Dependence (FTND; Heatherton et al.,1991); Age First Smoked, Age Regular Smoker and Years Regular Smoker (Smoking History Questionnaire; Brown et al., 2002), PDSS Total = Panic Disorder Severity Scale (PDSS; Shear et al., 1997, 2001); AUDIT Total = Alcohol Use Disorders Identification Test Total Score (Babor et al., 1992); Marijuana Use (Past 30 days - % Yes) (The Marijuana Smoking History Questionnaire; Bonn-Miller & Zvolensky, 2005); Negative Affectivity (BFI-Neuroticism = Big Five Inventory – Neuroticism Subscale; John & Srivastava, 1999).d = Cohen’s d index of effect size.