TABLE 8.

Comparison of female characteristics according to total CMS score (Leon-Velarde et al., 2005).

	No CMS (≤5) n (%) or median [IQR]	Mild total CMS score (6–10) n (%) or median [IQR]	Moderate total CMS score (>10) n (%) or median [IQR]
n (%)	227 (96.6)	7 (3.0)	1 (0.4)
Age (years)	25 [22; 33]	23 [22; 33]	26 [26; 26]
Ethnic group
Aymara	12 (5.3)	1 (14.3)	0 (0)
Quechua	215 (94.7)	6 (85.7)	1 (100)
Residency in La Rinconada (years)	3 [2; 5]	3 [2; 4]	6 [6; 6]
Hematocrit (%)	53 [49; 56]	61 [57; 67]*	60 [60; 60]
SpO2 (%)	83 [80; 85]	80 [76; 83]	83 [83; 83]
Heart rate (bpm)	90 [76; 97]	90 [88; 94]	93 [93; 93]
Diastolic blood pressure (mm Hg)	70 [70; 80]	70 [70; 80]	60 [60; 60]
Systolic blood pressure (mm Hg)	100 [100; 110]	100 [100; 110]	90 [90; 90]
Breathlessness/palpitations
0	180 (79.3)	4 (57.1)	0 (0)
1	29 (12.8)	1 (14.3)	1 (100)
2–3	18 (7.9)	2 (28.6)	0 (0)
Sleep disturbance
0	155 (68.3)	7 (100)	1 (100)
1–3	72 (31.7)	0 (0)	0 (0)
Cyanosis
0	207 (91.2)	4 (57.1)*	0 (0)
1–3	20 (8.8)	3 (42.9)*	1 (100)
Dilatation of veins
0	217 (95.6)	7 (100)	1 (100)
1–3	10 (4.4)	0 (0)	0 (0)
Paresthesia
0	181 (79.7)	6 (85.7)	0 (0)
1	37 (16.3)	1 (14.3)	1 (100)
2–3	9 (4)	0 (0)	0 (0)
Headache
0	159 (70)	6 (85.7)	0 (0)
1–3	68 (30)	1 (14.3)	1 (100)
Tinnitus
0	179 (78.9)	7 (100)	1 (100)
1–3	48 (21.1)	0 (0)	0 (0)
Hematocrit
0	171 (75.3)	0 (0)*	0 (0)
3	56 (24.7)	7 (100)*	1 (100)

IQR, interquartile range; CMS, chronic mountain sickness; SpO₂, pulse oxygen saturation. Scores of symptom severity were gathered together when the number of subjects per score was too small to allow statistical analysis. * Significantly different from subjects with no CMS (p < 0.05). No statistical comparison was performed with subject with moderate-severe total CMS score because of small sample size; no subject presented severe total CMS score.