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. 2016 Jan 4;9:7. doi: 10.1186/s13104-015-1810-8

Table 2.

Prevalence of LTOT among COPD patients < 75 and ≥ 75 years old

Prevalence (%) p value
<75 years old ≥75 years old
I 1/52 (1.9 %) 3/41 (7.3 %) n.s.
II 4/114 (3.5 %) 13/88 (14.8 %) 0.0043
III 7/67 (10.4 %) 11/48 (22.9 %) n.s.
IV 14/19 (73.7 %) 2/14 (14.3 %) 0.002

n.s. not significant