Table 2.
Weighted characteristics of study sample non-aspirin users and low-dose aspirin users (Group2: L1BMD).
| Non-aspirin use (n = 350) | Low-dose aspirin use (n = 878) | P value | |
|---|---|---|---|
| L1 BMD (gm/cm2) | 0.963 ± 0.159 | 1.006 ± 0.189 | < 0.001 |
| Age(years) | 63.03 ± 8.46 | 65.72 ± 8.60 | < 0.001 |
| Age groups (%) | < 0.001 | ||
| 50–60 years | 38.64 | 28.31 | |
| 60–70 years | 38.48 | 34.88 | |
| 70–80 years | 22.87 | 36.80 | |
| BMI (kg/m2) | 29.55 ± 5.55 | 30.87 ± 6.53 | < 0.001 |
| Hba1c (%) | 6.07 ± 1.27 | 6.27 ± 1.11 | 0.008 |
| Serum creatinine (mmol/L) | 83.06 ± 22.27 | 84.18 ± 34.46 | 0.574 |
| Serum uric acid (umol/L) | 327.82 ± 76.09 | 331.71 ± 81.46 | 0.443 |
| Gender (%) | 0.353 | ||
| Male | 58.21 | 55.29 | |
| Female | 41.78 | 44.70 | |
| Race (%) | 0.198 | ||
| Mexican American | 5.48 | 4.70 | |
| Other Hispanic | 8.48 | 5.18 | |
| Non-Hispanic White | 68.64 | 70.71 | |
| Non-Hispanic Black | 10.39 | 10.43 | |
| Other race-including multi-racial | 6.99 | 8.96 | |
| Education level (%) | 0.002 | ||
| Less than high school | 10.31 | 12.22 | |
| High school | 26.81 | 35.59 | |
| More than high school | 62.87 | 52.18 | |
| Heart attack (%) | < 0.001 | ||
| Yes | 5.46 | 15.98 | |
| No | 94.38 | 83.97 | |
| Recorded | 0.15 | 0.04 | |
| Fractures (%) | 0.085 | ||
| Yes | 34.20 | 27.81 | |
| No | 65.72 | 72.03 | |
| Recorded | 0.07 | 0.15 | |
| Smoking status (%) | 0.002 | ||
| Every day | 14.91 | 10.68 | |
| Some days | 4.11 | 1.30 | |
| Not at all | 32.93 | 35.38 | |
| Recorded | 48.03 | 52.63 | |
Mean ± SD for continuous variables: P value was calculated by the weighted linear regression model.
Per cent for categorical variables: P value was calculated by weighted chi-square test. Weights are created in NHANES to account for the complex survey design (including oversampling), survey non-response, and post-stratification adjustment to match total population counts from the Census Bureau.