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. Author manuscript; available in PMC: 2020 May 1.
Published in final edited form as: Clin Psychol Sci. 2019 Jan 29;7(3):582–596. doi: 10.1177/2167702618812700

Table 2.

Results from multilevel models predicting disordered gambling symptom counts

Predictor Base Model
Personality
Education
Income
Fully Adjusted
IRR 95% CI IRR 95% CI IRR 95% CI IRR 95% CI IRR 95% CI

Sex 1.80*** (1.45, 2.24) 1.46** (1.14, 1.87) 1 78*** (1.43, 2.21) 1.88*** (1.50, 2.35) 1 47** (1.14, 1.90)
Age 1.02 (0.97, 1.08) 1.01 (0.95, 1.07) 1.02 (0.97, 1.07) 1.03 (0.98, 1.08) 1.02 (0.96,1.08)
WP Disadvantage 1.11*** (1.05,1.18) 1.09*** (1.02, 1.16) 1.11*** (1.05, 1.17) 1.11*** (1.05, 1.18) 1.08* (1.02, 1.15)
BP Disadvantage 1 13*** (1.07, 1.20) 1.08* (1.01, 1.14) 1.09** (1.03, 1.15) 1.10*** (1.04, 1.17) 1.04 (0.98, 1.11)
WP Positive Emotionality 1.00 (0.98, 1.01) 1.00 (0.98, 1.02)
BP Positive Emotionality 1.00 (0.98, 1.01) 1.00 (0.98, 1.02)
WP Negative Emotionality 1.04*** (1.03, 1.06) 1.04*** (1.02, 1.06)
BP Negative Emotionality 1.07*** (1.06, 1.09) 1.07*** (1.05, 1.09)
WP Constraint 0.96*** (0.95, 0.98) 0.96*** (0.95, 0.98)
BP Constraint 0.99 (0.97, 1.00) 0.99 (0.97, 1.00)
WP Educational Attainment 0.86* (0.75, 0.97) 0.90 (0.77, 1.04)
BP Educational Attainment 0.77*** (0.69, 0.86) 0.85* (0.75, 0.96)
WP Household Income 0.94 (0.88, 1.00) 0.98 (0.91, 1.05)
BP Household Income 0.90** (0.84, 0.97) 0.97 (0.89, 1.05)

Note: Because neither the main effect for zygosity (IRR = 1.05, 95% CI = 0.83 to 1.34, p = .675) nor the zygosity x within-pair disadvantage effect (IRR = 0.95, 95% CI = 0.85 to 1.07, p = .3924) was significant, these predictors were not included in the models.

WP = within-pair, BP = between-pair

*

= p < .05

**

= p < .01

***

= p < .001