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. 2016 Dec 28;26(4):e1551. doi: 10.1002/mpr.1551

Table 2.

IRT and negative binomial regression parameter estimates: males aged 24–34

IRT model Negative binomial model
ln(income) –0.19 (0.01) –0.16 (0.02)
Race
Black 0.08 (0.04) 0.10 (0.06)
Asian 0.09 (0.06) 0.08 (0.08)
Hispanic 0.06 (0.03) –0.10 (0.05)
Other 0.15 (0.06) 0.17 (0.08)
Education
High school graduate 0.04 (0.04) 0.09 (0.06)
Some college 0.19 (0.04) 0.24 (0.06)
College graduate 0.26 (0.04) 0.32 (0.07)
Smoking behavior (cigarettes per day)
<1 0.19 (0.03) –0.04 (0.11)
2–5 0.02 (0.08) 0.21 (0.09)
6–16 0.14 (0.04) 0.14 (0.06)
16–25 0.17 (0.04) 0.14 (0.06)
26–35 0.25 (0.07) 0.17 (0.07)
36+ 0.87 (0.16) 0.50 (0.16)
Alcohol use (days per month)
1–7 –0.08 (0.03) –0.09 (0.04)
8–12 –0.01 (0.04) –0.12 (0.06)
13–18 –0.03 (0.06) –0.17 (0.08)
19–23 0.04 (0.05) 0.04 (0.08)
24–30 0.18 (0.06) –0.02 (0.09)
Dispersion parameter σ 1.90(0.03) b 1.05 (0.02)