Table 2.
Household expenditure on dietary supplements sold for weight loss, muscle building, and sexual function by household income (< 30 k or ≥ 30 k).
| Weight loss |
Muscle building |
Sexual function |
|||||
|---|---|---|---|---|---|---|---|
| HH Inc < 30 k |
HH Inc ≥ 30 k |
HH Inc < 30 k |
HH Inc ≥ 30 k |
HH Inc < 30 k |
HH Inc ≥ 30 k |
||
| All households | Any purchases (weighted) | 17.8% | 20.8% | 8.6% | 14.5% | 1.7% | 1.9% |
| Wald p-value | 0.000 | 0.000 | 0.212 | ||||
| N | 60,538 | 60,538 | 60,538 | 60,538 | 60,538 | 60,538 | |
| Any purchases (unweighted) | 18.6% | 22.2% | 9.1% | 13.9% | 1.7% | 1.8% | |
| Wilcoxon-Mann-Whitney p-value | 0.000 | 0.000 | 0.384 | ||||
| N | 13,470 | 47,068 | 13,470 | 47,068 | 13,470 | 47,068 | |
| Conditional proportional expenditure (weighted) | 0.4% | 0.1% | 0.3% | 0.1% | 0.4% | 0.1% | |
| Wald p-value | 0.000 | 0.000 | N/Aa | ||||
| N | 10,818 | 10,818 | 6170 | 6170 | 927 | 927 | |
| Conditional proportional expenditure (unweighted) | 0.4% | 0.1% | 0.4% | 0.1% | 0.3% | 0.1% | |
| Wilcoxon-Mann-Whitney p-value | 0.000 | 0.000 | 0.000 | ||||
| N | 2502 | 8316 | 1222 | 4948 | 227 | 700 | |
| Female head only | Any purchases (weighted) | 19.7% | 22.7% | 8.4% | 14.0% | 0.8% | 1.0% |
| Wald p-value | 0.002 | 0.000 | 0.390 | ||||
| N | 60,538 | 60,538 | 60,538 | 60,538 | 60,538 | 60,538 | |
| Any purchases (unweighted) | 19.5% | 22.9% | 8.9% | 13.1% | 0.8% | 0.8% | |
| Wilcoxon-Mann-Whitney p-value | 0.000 | 0.000 | 0.853 | ||||
| N | 6668 | 9128 | 6668 | 9128 | 6668 | 9128 | |
| Conditional proportional expenditure (weighted) | 0.4% | 0.1% | 0.3% | 0.1% | 0.1% | 0.1% | |
| Wald p-value | 0.000 | 0.000 | N/Aa | ||||
| N | 10,818 | 10,818 | 6170 | 6170 | 927 | 927 | |
| Conditional proportional expenditure (unweighted) | 0.4% | 0.1% | 0.3% | 0.1% | 0.2% | 0.1% | |
| Wilcoxon-Mann-Whitney p-value | 0.000 | 0.000 | 0.000 | ||||
| N | 1297 | 1897 | 596 | 1069 | 53 | 71 | |
| Male head only | Any purchases (weighted) | 12.7% | 18.2% | 8.5% | 15.8% | 2.9% | 2.7% |
| Wald p-value | 0.000 | 0.000 | 0.648 | ||||
| N | 60,538 | 60,538 | 60,538 | 60,538 | 60,538 | 60,538 | |
| Any purchases (unweighted) | 12.8% | 17.1% | 8.7% | 14.2% | 2.8% | 2.7% | |
| Wilcoxon-Mann-Whitney p-value | 0.000 | 0.000 | 0.824 | ||||
| N | 2013 | 4099 | 2013 | 4099 | 2013 | 4099 | |
| Conditional proportional expenditure (weighted) | 0.3% | 0.1% | 0.4% | 0.1% | 0.7% | 0.6% | |
| Wald p-value | 0.000 | 0.000 | N/Aa | ||||
| N | 10,818 | 10,818 | 6170 | 6170 | 927 | 927 | |
| Conditional proportional expenditure (unweighted) | 0.3% | 0.1% | 0.5% | 0.1% | 0.5% | 0.2% | |
| Wilcoxon-Mann-Whitney p-value | 0.000 | 0.000 | 0.000 | ||||
| N | 258 | 574 | 175 | 445 | 57 | 93 | |
| Female and male head | Any purchases (weighted) | 19.3% | 20.9% | 9.1% | 14.2% | 1.9% | 2.0% |
| Wald p-value | 0.122 | 0.000 | 0.940 | ||||
| N | 60,538 | 60,538 | 60,538 | 60,538 | 60,538 | 60,538 | |
| Any purchases (unweighted) | 19.8% | 22.7% | 9.4% | 14.0% | 2.4% | 1.9% | |
| Wilcoxon-Mann-Whitney p-value | 0.000 | 0.000 | 0.022 | ||||
| N | 4789 | 33,841 | 4789 | 33,841 | 4789 | 33,841 | |
| Conditional proportional expenditure (weighted) | 0.4% | 0.1% | 0.4% | 0.1% | 0.2% | 0.1% | |
| Wald p-value | 0.001 | 0.000 | N/Aa | ||||
| N | 10,818 | 10,818 | 6170 | 6170 | 927 | 927 | |
| Conditional proportional expenditure (unweighted) | 0.4% | 0.1% | 0.5% | 0.1% | 0.2% | 0.1% | |
| Wilcoxon-Mann-Whitney p-value | 0.000 | 0.000 | 0.000 | ||||
| N | 947 | 5845 | 451 | 3434 | 117 | 536 | |
a
Missing standard errors because of stratum with single sampling unit.