Table 6.
Multivariate quantile regression analysis of the association between dietary diversity (DD) and maternal characteristics and child height-for-age Z-score, Kenya, 2014
| Quantile regression | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Ordinary least squares regression | 5th quantile | 10th quantile | 25th quantile | 50th quantile | 75th quantile | 90th quantile | ||||||||
| Variable | Estimate | se | Estimate | se | Estimate | se | Estimate | se | Estimate | se | Estimate | se | Estimate | se |
| Child characteristics | ||||||||||||||
| DD score | −0·005 | 0·012 | 0·027 | 0·029 | 0·008 | 0·021 | −0·019 | 0·014 | −0·020 | 0·013 | −0·016 | 0·015 | 0·004 | 0·021 |
| Child’s sex (female) | 0·233*** | 0·039 | 0·227* | 0·094 | 0·324*** | 0·070 | 0·277*** | 0·046 | 0·234*** | 0·043 | 0·154** | 0·049 | 0·160* | 0·069 |
| Child’s age (months) | −0·013*** | 0·001 | −0·005 | 0·003 | −0·006* | 0·002 | −0·007*** | 0·001 | −0·010*** | 0·001 | −0·016*** | 0·001 | −0·018*** | 0·002 |
| Maternal characteristics | ||||||||||||||
| Mother’s education (years) | −0·025*** | 0·006 | 0·003 | 0·015 | 0·001 | 0·011 | −0·010 | 0·007 | −0·019** | 0·007 | −0·026*** | 0·008 | −0·044*** | 0·011 |
| Mother’s age (years) | 0·011* | 0·005 | 0·008 | 0·012 | 0·014 | 0·009 | 0·017** | 0·006 | 0·013* | 0·006 | 0·009 | 0·006 | −0·0004 | 0·009 |
| Mother’s parity | −0·049** | 0·016 | −0·065 | 0·038 | −0·068* | 0·028 | −0·082*** | 0·018 | −0·058*** | 0·018 | −0·040* | 0·020 | 0·016 | 0·027 |
| Mother working (yes) | −0·181*** | 0·043 | −0·235* | 0·102 | −0·194** | 0·075 | −0·084 | 0·049 | −0·178*** | 0·047 | −0·269*** | 0·053 | −0·234** | 0·074 |
| Mother’s BMI (kg/m2) | 0·035*** | 0·005 | 0·033* | 0·013 | 0·026** | 0·009 | 0·031*** | 0·006 | 0·037*** | 0·006 | 0·037*** | 0·007 | 0·054*** | 0·009 |
| Mother’s height (cm) | 0·500*** | 0·032 | 0·355*** | 0·076 | 0·463*** | 0·056 | 0·502*** | 0·037 | 0·542*** | 0·035 | 0·542*** | 0·040 | 0·446*** | 0·056 |
| Household characteristics | ||||||||||||||
| Household wealth index category | ||||||||||||||
| Poorest (reference) | ||||||||||||||
| Wealth index (poor) | 0·171** | 0·059 | 0·098 | 0·140 | 0·243* | 0·104 | 0·159* | 0·068 | 0·133* | 0·065 | 0·165* | 0·073 | 0·118 | 0·102 |
| Wealth index (middle) | 0·345*** | 0·066 | 0·256 | 0·159 | 0·329** | 0·117 | 0·305*** | 0·077 | 0·368*** | 0·073 | 0·354*** | 0·082 | 0·389*** | 0·116 |
| Wealth index (rich) | 0·310*** | 0·072 | −0·015 | 0·173 | 0·131 | 0·128 | 0·292*** | 0·084 | 0·262** | 0·080 | 0·398*** | 0·090 | 0·475*** | 0·126 |
| Wealth index (richest) | 0·706*** | 0·085 | 0·204 | 0·204 | 0·437** | 0·151 | 0·711*** | 0·099 | 0·738*** | 0·094 | 0·645*** | 0·106 | 0·857*** | 0·149 |
| Household size | −0·011 | 0·010 | 0·004 | 0·025 | −0·009 | 0·018 | 0·010 | 0·012 | −0·003 | 0·011 | −0·010 | 0·013 | −0·038* | 0·018 |
| Observations (n) | 4623 | 4623 | 4623 | 4623 | 4623 | 4623 | 4623 | |||||||
*P<0·05, **P<0·01, ***P<0·001.