Table 3

Estimators and 95% confidence intervals (CI) of the quantile regression models with τ = 0.9 (QR 0.9) and τ = 0.97 (QR 0.97).


QR 0.9
QR 0.97


Estimator
95% CI
Estimator
95% CI

Intercept
5.16
3.26, 7.06
6.33
4.61, 8.05
Sex (SEX)
-0.25
-0.47, -0.03
---
---
Pregnancy smoking (PS)
0.54
0.11, 0.97
---
---
Watching TV (TV) *




     Up to 1 h
-0.03
-0.27, 0.21
0.33
-0.20, 0.86
     1–2 h
0.30
0.05, 0.55
0.68
0.23, 1.13
     More than 2 h
1.31
0.80, 1.82
2.11
1.01, 3.21
Breastfeeding (BF)
-0.41
-0.72, -0.10
-0.63
-1.00, 0.26
Meal frequency (MF) †




     4/day
-0.19
-0.62, 0.24
-0.88
-1.53, -0.23
     5 or more/day
-0.44
-0.01, -0.87
-1.13
-1.76, 0.50
Age (AGE)
0.03
0.01, 0.05
---
---
Maternal BMI (MB)
0.16
0.13, 0.19
0.22
0.16, 0.28
Weight gain in first 2 y (WG)
0.73
0.65, 0.81
0.87
0.75, 0.99

* "never" as reference

† "1–3/day" as reference

Beyerlein et al. BMC Medical Research Methodology 2008 8:59   doi:10.1186/1471-2288-8-59