Skip to main content
. Author manuscript; available in PMC: 2016 Jul 7.
Published in final edited form as: Vaccine. 2013 Dec 2;32(4):478–482. doi: 10.1016/j.vaccine.2013.11.056

Table 1.

Association of independent variables with continuous oral polio vaccine type 3 titers at 12 monthsa.

Characteristics 25th quantile regression
50th quantile regression
Effect 95% CI p-value Effect 95% CI p-value
Intercept 3.73 (1.21, 6.25) 0.0039 8.54 (7.53, 9.55) <.0001
≥2 diarrhea episodes in 1st 6 months −0.23 (−1.26, 0. 80) 0.6599 −0.17 (−0.66, 0.33) 0.5116
WAZ ≥−2 at 6 months 2.35 (0.66, 4.03) 0.0065 1.11 (0.31, 1.90) 0.0063
Breastfeeding duration in 1st 6 months 0.41 (0.11, 0.71) 0.0072 0.16 (0.05, 0.28) 0.0065
Family income (1000 Taka)b 0.05 (−0.05, 0.15) 0.3717 −0.03 (−0.08, 0.02) 0.2159
a

Type 3 titer at 12 months of age was analyzed as a continuous outcome in quantile regression (n = 314).

b

The family income was standardized in 1000 Taka, such that the estimated effect was interpreted as the change in type 3 titers for every 1000 Taka increment (one Taka equals approximately $0.013 US dollars).