Table 1.
Characteristics of the study subjects in the Bolivian cohorts.
| Characteristic | Entirea | La Paz | El Alto | p valueb |
|---|---|---|---|---|
| No. of subjects | 99 | 48 | 51 | |
| Sex (no. of men/women) | 49/50 | 24/24 | 25/26 | 1.0000 |
| Age (years)c | 25.1 ± 3.2 | 24.9 ± 3.0 | 25.3 ± 3.5 | 0.4390 |
| Height (cm)c | 159.5 ± 8.2 | 161.2 ± 8.2 | 157.9 ± 8.0 | 0.0281∗ |
| Weight (kg)c | 62.2 ± 10.4 | 63.6 ± 11.1 | 61.0 ± 9.7 | 0.1034 |
| BMI (kg/m2)c | 24.4 ± 3.6 | 24.3 ± 3.2 | 24.5 ± 3.9 | 0.9073 |
| Hb concentration (g/dL)c,d | 14.4 ± 1.4 | 14.3 ± 1.4 | 14.4 ± 1.4 | 0.9703 |
| Hb in men (g/dL)c,d | 15.4 ± 0.8 | 15.3 ± 0.8 | 15.6 ± 0.7 | 0.2673 |
| Hb in women (g/dL)c,d | 13.3 ± 1.0 | 13.4 ± 1.0 | 13.3 ± 1.0 | 0.8566 |
| SpO2 (%)c,d | 90.5 ± 2.6 | 91.3 ± 2.4 | 89.7 ± 2.5 | 0.0027∗∗ |
| Heart rate (bpm)c | 77.1 ± 11.9 | 79.3 ± 13.2 | 75.0 ± 10.2 | 0.0740 |
| SBP (mmHg)c | 113.7 ± 12.2 | 109.8 ± 11.6 | 117.3 ± 11.7 | 0.0020∗∗ |
| DBP (mmHg)c | 65.8 ± 8.6 | 60.9 ± 6.6 | 70.5 ± 7.7 | 1.8 × 10−9∗∗ |
| Current smoking (%) | 2.0 | 2.1 | 2.0 | 1.0000 |
| Alcohol drinking (%) | 17.2 | 27.1 | 7.8 | 0.0156∗ |
| Exercise (%) | 47.5 | 50.0 | 45.1 | 0.6894 |
Abbreviations: BMI—body mass index; Hb—hemoglobin; SpO2—percutaneous arterial oxygen saturation; SBP—systolic blood pressure; DBP—diastolic blood pressure. aCombined cohort of La Paz and El Alto cohorts. bWelch's t-test and Fisher's exact test were used to test differences in quantitative and categorical data, respectively, between the La Paz and El Alto cohorts. Based on Bonferroni's correction, a p value of < 0.0038 (0.05/13) was considered statistically significant. cQuantitative data are presented as the mean ± standarddeviation of the mean. dEstimated value obtained by using a noninvasive method. ∗p < 0.05. ∗∗p < 0.01.