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. 2019 Jul 8;54(2):87–93. doi: 10.1093/abm/kaz029

Table 1.

Descriptive statistics

Mean SD Possible range Observed range
Age 37.55 15.74 19–80
Sex (% female) 50%
C-reactive protein (CRP) 3.97 2.90 0.20–10.40
Interleukin-6 (IL-6) 2.82 2.06 0.06–9.17
Adverse childhood experiences 2.41 2.24 0–10 0–9
Belonging to tribal community 2.81 2.06 0–6 1–6
Body mass index 30.71 7.32 17.13–44.15
Depressive symptoms (PHQ-9) 0–27 0–24
Annual income (category range: 1–4) 2.50 0.84 1–4 1–4

PHQ-9 Patient Health Questionnaire-9; SD standard deviation.