Table 1.
Data source location, altitude range, and data availability, sorted by maximum altitude
| Altitude | Biomarker data available | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Country | Year | Min | Max | Group | Hb | SF | sTfR | SR | RBP | CRP | AGP | Smoking data available |
| The United Kingdoma | 2008–2014 | 80 | 80 | PSC: | NA | - | ||||||
| WRA: | X | X | X | X | X | Yes/No # cigarettes/day | ||||||
| Laosa | 2006 | 999 | 1251 | PSC: | X | X | X | X | X | - | ||
| WRA: | X | X | X | X | X | NA | ||||||
| Malawi | 2016 | 52 | 1626 | PSC: | X | X | X | X | X | X | X | - |
| WRA: | X | X | X | X | X | X | X | NA | ||||
| Azerbaijan | 2013 | −27 | 1662 | PSC: | X | X | X | X | X | - | ||
| WRA: | X | X | X | X | X | X | NA | |||||
| Georgiaa | 2009 | 3 | 1944 | PSC: | X | X | X | - | ||||
| WRA: | X | X | X | Yes/No # cigarettes/day | ||||||||
| Papua New Guinea | 2005 | 10 | 2400 | PSC: | X | X | X | X | X | - | ||
| WRA: | X | X | X | X | X | Yes/No | ||||||
| Mexico | 2012 | 0 | 2985 | PSC: | X | X | X | - | ||||
| WRA: | X | X | X | Yes/No # cigarettes/day | ||||||||
| Guatemala | 2013 | 0 | 3034 | PSC: | X | X | X | X | X | X | - | |
| WRA: | X | X | X | X | X | X | Yes/No # cigarettes/day | |||||
| Mexico | 2006 | 1 | 3110 | PSC: | X | X | X | X | - | |||
| WRA: | X | X | X | X | Yes/No # cigarettes/day | |||||||
| Colombia | 2010 | −15 | 3204 | PSC: | X | X | X | X | - | |||
| WRA: | X | X | X | Yes/No | ||||||||
| Afghanistan | 2014 | 325 | 3360 | PSC: | X | X | X | X | X | - | ||
| WRA: | X | X | X | X | X | NA | ||||||
| Ecuador | 2012 | 0 | 3931 | PSC: | X | X | X | X | - | |||
| WRA: | X | X | X | X | Yes/No | |||||||
| Bolivia | 2013–2015 | 4000 | 4000 | PSC: | X | X | X | X | X | X | X | - |
| WRA: | X | X | X | X | X | X | X | NAb | ||||
| The United States | 2003–2006 | NAc | NA | PSC: | - | |||||||
| WRA: | X | X | X | X | X | Yes/No # cigarettes/day | ||||||
a
Altitude reported as categories (the United Kingdom, all assumed to be 80 m based on average altitude of the 10 most populous areas; Georgia, altitude recoded based on an average altitude within the cluster. Laos reported altitude in three categories).
b
Smoking data not included in the analysis because only two women reported smoking.
c
Altitude data collected, but not available in the public use dataset.
AGP, alpha-1 acid glycoprotein; CRP, C-reactive protein; NA, data not available; PSC, preschool-aged children; RBP, retinol binding protein; SF, serum ferritin; SR, serum retinol; sTfR, serum transferrin receptor; WRA, women of reproductive age.