Skip to main content
. Author manuscript; available in PMC: 2017 Jul 4.
Published in final edited form as: Arch Dis Child. 2016 Jul 1;101(11):1043–1047. doi: 10.1136/archdischild-2016-310837

Table 2.

Tobit regression results of family SES associations with log CRP. Children ages 2–18 years with CRP ≤10mg/l, NHANES 1999–2010. N=13,165.

Model 1 Model 2 Model 3 Model 4
Variables ß 95% CI ß 95% CI ß 95% CI ß 95% CI
Family Socioeconomic Status (SES)
Parent < high school degree1 0.35** (0.21, 0.50) 0.19** (0.05, 0.32)     0.60**   (0.28, 0.93)     0.18**   (0.05, 0.31)
Parent high school degree1 0.29** (0.15, 0.42) 0.17** (0.05, 0.30)     0.50**   (0.16, 0.84)     0.17**   (0.04, 0.29)
Parent some college1 0.15* (0.023, 0.27) 0.061 (−0.05, 0.18)   0.36*   (0.04, 0.68)   0.056 (−0.06, 0.17)
Poor2 0.24** (0.09, 0.39) 0.15* (0.01, 0.28)   0.14*   (0.01, 0.28)     0.58**   (0.25, 0.91)
Low income2 0.14* (0.002, 0.28) 0.09 (−0.04, 0.21) 0.09 (−0.04, 0.21)   0.40*   (0.06, 0.74)
Moderate income2 0.18** (0.06, 0.31) 0.11 (−0.01, 0.23) 0.11   (−0.005, 0.23) 0.19 (−0.16, 0.54)
Child Age and Health
Age in years 0.07** (0.06, 0.08) 0.05** (0.04, 0.06)     0.08**   (0.06, 0.10)       0.070**   (0.05, 0.09)
Recent cold 0.58** (0.49, 0.68) 0.60** (0.51, 0.69)     0.59**   (0.50, 0.68)     0.59**   (0.50, 0.68)
Recent flu, pneumonia, ear infection 0.35** (0.19, 0.52) 0.21** (0.05, 0.36)     0.21**   (0.05, 0.36)     0.20**   (0.05, 0.36)
Recent stomach illness 0.14 (−0.01, 0.28) 0.09 (−0.05, 0.22) 0.09 (−0.06, 0.22) 0.09 (−0.05, 0.22)
BMI z-score 0.63** (0.59, 0.66)     0.63**    (0.59, 0.66)     0.63**   (0.59, 0.66)
Child Age * Family SES Interactions
Age * Parent < high school degree   −0.04**    (−0.06, −0.01)
Age * Parent high school degree −0.03*      (−0.06, −0.002)
Age * Parent some college −0.03*      (−0.05, −0.001)
Age * Poor     −0.04**   (−0.06, −0.01)
Age * Low income   −0.03*     (−0.05, −0.001)
Age * Moderate income −0.01     (−0.03, − 0.02)
**

p<0.01,

*

p<0.05. FPL = Federal Poverty Level. Control variables included in models but not shown for brevity: child gender, child race, parent age, parent gender, parent foreign-born, parent marital status, household size, survey wave dummy variables.

1

Ref: Parent is a college graduate.

2

Ref: High family income (income-to-poverty ratio ≥ 4 x FPL).