Association between acute mountain sickness (AMS) and age: a meta-analysis

Table 3 Subgroup analysis results of 17 studies

Subgroup	Grouping criteria	No. of Studies	AMS/Non-AMS (n)	I² (%)	IV (95%CI)	P value
Race	Non- sian	7	448/901	77	−1.65(−4.51,1.21)	0.26
Race	Asian	10	1362/2113	57	0.27(− 0.07,0.84)	0.12
Age (year)	< 18	1	80/99	–	0.00(−0.13,0.13)	1.00
	18–30	6	900/832	48	0.31(−0.08,0.70)	0.12
	≥30	10	830/2083	79	−0.64(−3.08,1.78)	0.60
Ascent mode	Trek	6	418/841	81	−1.51(−4.83,1.82)	0.37
	Car or Bus	6	716/575	61	0.14(−0.26,0.54)	0.50
	Plane	5	676/1598	35	0.49(−0.20,1.18)	0.16
Overall		17	1810/3014	72	0.10(−0.38,0.58)	0.69

AMS Acute mountain sickness; Age group criteria: Average age (mean). IV Inverse variance, CI Confidence intervals
-: No data

ISSN: 2054-9369