n TEM result summary % IDA absent at TEM Mean nasal nitric oxide in ppb (StDev) Mean ciliary beat frequency  in Hz (StDev) Cilia pattern*
4 Normal ultrastructure 2%(2.1) 461(168) 11.0(1.9) Co-ordinated
5 Inner dynein arm defect 42%(19) 235(211) 8.4(4.4) stiff [1], static [2], slow [2] and/or dyskinetic [2]
2 Radial spoke and inner dynein arm defect 90% (-) 57(-) 0 Static
1 Inner and outer dynein arm defect 55% 31 0 Static
1 Insufficient material NA 276 9.8  Dyskinetic
Normal data from respiratory controls¬† n value 1(2.3)% n=200 594(262)ppb n=150 10.3(2.3) n=840  
Table 1: Results from a diagnostic review of 13 patients listed on the Royal Brompton Hospital PCD database as PCD due to an IDA defect.