Table 3

Pre and postwalk test oxygen saturation and change in oxygen saturation over time for all patients and by Down syndrome status

All patients (n=82)Non-Down syndrome patients (n=53)Down syndrome patients (n=29)
Mean±SD oxygen saturation (%) measured prewalk test (median (range))
 Baseline84.7±6.55 (84 (71–98))
n=78		84.9±6.59 (85 (71–97))
n=49		84.3±6.58 (83 (72–98))
n=29
 3 months85.5±6.24 (86 (70–98))
n=65		86.2±6.20 (87 (70–98))
n=44		84.2±6.26 (83 (73–96))
n=21
 6 months84.9±6.92 (85 (68–100))
n=66		85.0±7.20 (85 (68–100))
n=45		84.6±6.43 (84 (75–96))
n=21
 12 months85.6±7.17 (85 (70–98))
n=60		86.0±7.40 (85 (70–98))
n=42		84.7±6.70 (85 (72–95))
n=18
 18 months85.5±6.96 (87 (73–98))
n=52		85.1±7.01 (86 (73–98))
n=35		86.5±6.96 (87 (73–98))
n=17
 24 months86.1±7.45 (88 (64–100))
n=43		85.7±7.91 (88 (64–99))
n=30		86.8±7.45 (88 (64–100)) n=13
 Latest83.5±7.72 (83 (67–99))
n=37		84.4±8.16 (84 (67–99))
n=28		80.7±5.63 (79 (75–91))
n=9
Mean±SD oxygen saturation (%) measured postwalk test (median (range))
 Baseline72.0±12.78 (72 (39–99))
n=78		72.2±13.21 (70 (41–99))
n=49		71.7±12.23 (73 (39–99))
n=29
 3 months73.1±11.11 (72 (50–98))
n=65		74.9±10.81 (75 (53–95))
n=44		69.3±11.0 (69 (50–98))
n=21
 6 months72.4±10.95 (72 (48–96))
n=66		72.6±12.44 (72 (48–96))
n=44		72.2±7.00 (72 (59–85))
n=21
 12 months71.2±11.78 (70 (44–97))
n=59		71.7±11.69 (70 (53–97))
n=41		69.9±12.24 (72 (44–86))
n=18
 18 months70.3±11.17 (69 (42–96))
n=52		70.4±10.28 (71 (50–93))
n=35		69.9±13.16 (65 (42–96))
n=17
 24 months72.7±12.34 (72 (51–109))
n=42		72.2±11.66 (70 (51–95))
n=29		73.8±14.17 (73 (55–109))
n=13
 Latest69.9±10.82 (70 (53–95))
n=37		71.6±10.96 (71 (53–95))
n=28		64.7±8.97 (63 (55–81))
n=9