Table 8.
Multivariate quantile regression analysis of the association dietary diversity (DD) and maternal characteristics and child height-for-age Z-score, Democratic Republic of Congo, 2013
| 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 | 0·035* | 0·017 | 0·073* | 0·030 | 0·066* | 0·027 | 0·041 | 0·021 | 0·017 | 0·018 | 0·031 | 0·022 | 0·039 | 0·036 |
| Child’s sex (female) | 0·321*** | 0·048 | 0·261** | 0·086 | 0·265*** | 0·078 | 0·340*** | 0·061 | 0·384*** | 0·052 | 0·262*** | 0·065 | 0·302** | 0·104 |
| Child’s age (months) | −0·033*** | 0·002 | −0·022*** | 0·003 | −0·026*** | 0·002 | −0·029*** | 0·002 | −0·032*** | 0·002 | −0·034*** | 0·002 | −0·039*** | 0·003 |
| Maternal characteristics | ||||||||||||||
| Mother’s education (years) | 0·024** | 0·008 | 0·055*** | 0·014 | 0·051*** | 0·012 | 0·037*** | 0·009 | 0·018* | 0·008 | 0·021* | 0·010 | −0·005 | 0·017 |
| Mother’s age (years) | 0·028*** | 0·006 | 0·030** | 0·011 | 0·029** | 0·009 | 0·026*** | 0·008 | 0·032*** | 0·007 | 0·034*** | 0·008 | 0·023 | 0·013 |
| Mother’s parity | −0·099*** | 0·017 | −0·084** | 0·031 | −0·086** | 0·028 | −0·093*** | 0·022 | −0·116*** | 0·019 | −0·115*** | 0·023 | −0·104** | 0·037 |
| Mother working (yes) | −0·045 | 0·058 | 0·064 | 0·103 | −0·043 | 0·094 | −0·050 | 0·074 | −0·090 | 0·063 | −0·114 | 0·078 | 0·065 | 0·126 |
| Mother’s BMI (kg/m2) | 0·017* | 0·008 | −0·004 | 0·014 | 0·002 | 0·013 | 0·008 | 0·010 | 0·025** | 0·009 | 0·017 | 0·011 | 0·021 | 0·018 |
| Mother’s height (cm) | 0·499*** | 0·035 | 0·452*** | 0·063 | 0·438*** | 0·057 | 0·507*** | 0·045 | 0·524*** | 0·038 | 0·522*** | 0·047 | 0·437*** | 0·077 |
| Household characteristics | ||||||||||||||
| Household wealth index category | ||||||||||||||
| Poorest (reference) | ||||||||||||||
| Wealth index (poor) | −0·088 | 0·068 | 0·007 | 0·122 | −0·068 | 0·111 | −0·068 | 0·088 | −0·138 | 0·075 | −0·230* | 0·092 | 0·020 | 0·149 |
| Wealth index (middle) | 0·066 | 0·071 | 0·134 | 0·128 | 0·120 | 0·116 | 0·091 | 0·092 | 0·062 | 0·078 | −0·131 | 0·097 | 0·060 | 0·156 |
| Wealth index (rich) | 0·084 | 0·078 | 0·138 | 0·139 | 0·004 | 0·126 | 0·146 | 0·099 | 0·158 | 0·085 | −0·048 | 0·105 | 0·067 | 0·170 |
| Wealth index (richest) | 0·441*** | 0·099 | 0·641*** | 0·179 | 0·574*** | 0·162 | 0·617*** | 0·128 | 0·527*** | 0·109 | 0·296* | 0·135 | 0·353 | 0·218 |
| Household size | 0·007 | 0·009 | −0·018 | 0·017 | −0·019 | 0·016 | 0·008 | 0·012 | 0·014 | 0·011 | 0·027* | 0·013 | 0·007 | 0·021 |
| Observations (n) | 4745 | 4745 | 4745 | 4745 | 4745 | 4745 | 4745 | |||||||
*P<0·05, **P<0·01, ***P<0·001.