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. Author manuscript; available in PMC: 2016 Mar 17.
Published in final edited form as: J Asthma. 2015 Aug 24;53(2):133–138. doi: 10.3109/02770903.2015.1072721

Table 2.

Geometric means and distributional characteristics for dust mite allergen (Der f 2/ Der p 2) concentrations (MARIA™ data) in each treatment group, by location and time point.

Location and Time Point N Geometric Mean, ng/g (95% CI) p-Valuea
Test Kit Control Test Kit Control
Child's bedroom floor
    Baseline 26 29 747 (359, 1556) 646 (357, 1168) 0.03
    6 months 26 29 344 (166, 715) 701 (398, 1235)
    12 months 26 29 316 (154, 652) 383 (156, 940)
Living room floor
    Baseline 26 29 321 (129, 801) 351 (147, 838) 0.10
    6 months 26 29 131 (52, 327) 340 (137, 844)
    12 months 26 29 201 (85, 480) 265 (121, 585)
Child's bed
    Baseline 26 29 566 (290, 1106) 617 (299, 1273) 0.95
    6 months 26 29 259 (120, 560) 683 (248, 1885)
    12 months 26 29 560 (193, 1626) 237 (74, 760)
a

p - Value for F-test of average (6- and 12-month) differential reduction in log-transformed Der f 2/ Der p 2 concentrations from baseline in the test kit group versus control, based on repeated measured model. Overall p =0.02 for model combining all data across locations.