They reported ease of movement between rooms ( 4.11 0.21 vs 1.44 0.20 ; P = .001 ) ; when traveling ( 5.00 0.00 vs 3.00 0.45 ; P < .02 ) ( 1 = very difficult , 5 = very easy ) ; 5.0 % were sleep disturbed with the portable compared to 42.1 % with pole-mounted pump ( P < .04 ) .