Skip to main content
. 2017 Nov 21;16:202. doi: 10.1186/s12939-017-0685-9

Table 2.

Coefficients from conditional quantile regression models on body mass index (BMI) among women (N = 10,838), 2008–2012

Characteristic 10th Quantile 25th Quantile 50th Quantile 75th Quantile 90th Quantile
Model 1:
 Educational attainment (middle school or less)a
  High school −0.52(0.11)** −0.60(0.11)** −0.80(0.14)** −0.75(0.14)** −0.84(0.17)**
  College and above −1.07(0.14)** −1.25(0.12)** −1.56(0.15)** −2.05(0.19)** −2.42(0.20)**
 Goodness of fit: R1(τ) 0.08 0.10 0.07 0.05 0.03
Model 2:
 Educational attainment (middle school or less)a
  High school −0.57(0.11)** −0.65(0.10)** −0.74(0.12)** −0.62(0.15)** −0.58(0.20)**
  College and above −1.04(0.14)** −1.25(0.15)** −1.39(0.10)** −1.70(0.14)** −1.99(0.22)**
 Household income (logged) −0.03(0.04) 0.05(0.04) −0.04(0.03) −0.27(0.06)** −0.48(0.08)**
 Occupational status (manual worker)
  Professional 0.09(0.18) 0.17(0.16) −0.05(0.14) −0.08(0.20) 0.14(0.29)
  Clerical/service/sales 0.32(0.12)* 0.27(0.12)* 0.02(0.11) 0.16(0.12) 0.26(0.21)
  Not in the labor force 0.16(0.09) 0.14(0.08) −0.11(0.10) −0.03(0.10) 0.15(0.17)
 Goodness of fit: R1(τ) 0.09 0.10 0.07 0.06 0.04
Model 3:
 Educational attainment (middle school or less)a
  High school −0.59(0.10)** −0.61(0.09)** −0.71(0.11)** −0.57(0.13)** −0.49(0.21)*
  College and above −1.04(0.11)** −1.20(0.11)** −1.32(0.12)** −1.63(0.16)** −1.81(0.21)**
 Household income (logged) −0.04(0.05) 0.01(0.03) −0.04 (0.03) −0.26(0.06)** −0.46(0.05)**
 Occupational status (manual worker)
  Professional 0.14(0.19) 0.12(0.15) −0.08(0.15) −0.05(0.20) 0.04(0.35)
  Clerical/service/sales 0.35(0.13)** 0.18(0.11) 0.05(0.12) 0.12(0.12) 0.17(0.20)
  Not in the labor force 0.39(0.22) 0.29(0.14)* 0.02(0.13) 0.24(0.21) 0.48(0.22)*
 Health behaviors
  Hours of work 0.03(0.02) 0.03 (0.03) 0.02(0.02) 0.05(0.02)* 0.05 (0.02)*
 Smoking (non-smoker)
  Current smoker −0.40(0.11)** −0.33(0.15)* −0.23(0.15) −0.03(0.23) 0.29(0.48)
  Former smoker 0.12(0.10) 0.32(0.18) 0.44(0.18)* 0.31(0.28) 0.20(0.32)
 Drinking (never)
  Light drinker 0.19(0.08)* 0.22(0.08)** 0.05(0.10) −0.10(0.12) 0.00(0.15)
  Light and frequent drinker 0.33(0.08)** 0.37(0.08)** 0.28(0.12)* 0.05(0.13) 0.27(0.23)
  Moderate drinker 0.48(0.13)** 0.52(0.13)** 0.31(0.17) 0.27(0.25) 0.25(0.36)
  Heavy drinker (60–80 g ethanol/a day) 0.53(0.24)* 0.40(0.20) 0.47(0.30) 0.43(0.30) 0.59(0.56)
  Binge drinker (> 80 g ethanol/a day) 0.61(0.22)** 0.92(0.31)** 1.15(0.20)** 1.40(0.44)** 2.04(0.70)**
 Goodness of fit: R1(τ) 0.09 0.10 0.08 0.06 0.04

p-value ** < 0.01; * < 0.05. Age, survey year, marital status, self-rated health, region of residence, and parental education are controlled for in the model 2 and 3. Bootstrap standard errors are in parentheses

aOmitted category is shown in parenthesis

HHS Vulnerability Disclosure