Table 2 Mean monthly cost of dietary supplements over time, for DS users only and all participants
Baseline | Year 1 | Year 2 | Year 3 | Year 4 | Year 5 | |
|---|---|---|---|---|---|---|
All Participants | ||||||
N | 2990 | 2869 | 2714 | 2551 | 2226 | 2068 |
Mean Cost | $10.23 | $12.16 | $11.00 | $13.14 | $10.99 | $13.32 |
SD Cost | $14.74 | $15.82 | $15.80 | $16.93 | $14.78 | $16.56 |
DS Users | ||||||
N | 2105 | 2233 | 1940 | 2040 | 1692 | 1711 |
Mean Cost | $14.56 | $15.64 | $15.42 | $16.45 | $14.94 | $16.12 |
SD Cost | $15.59 | $16.35 | $16.79 | $17.45 | $15.40 | $16.93 |
Minimum Cost+ | $0.73 | $0.91 | $0.91 | $0.91 | $0.73 | $0.91 |
Maximum Cost | $130.00 | $138.25 | $174.80 | $174.80 | $104.67 | $117.03 |