Table 2. Characteristics of the 10 human respiratory tract viral metagenomes including GC content and CG dinucleotide relative abundance odds ratios.
| Metagenome | Number of Sequences | Percent Human | Percent Non-Human | Non-Human BP | Non-Human Av Seq Length | GC Content | CG Odds Ratio |
| NonCF1Asthma | 286192 | 18% (52142) | 82% (234050) | 54465453 | 229 | 41.3 | 1.07 |
| NonCF2 | 281687 | 34% (97091) | 66% (184596) | 41522972 | 215 | 40.1 | 1.01 |
| NonCF3 | 240848 | 10% (23149) | 90% (217699) | 51487425 | 236 | 40.5 | 0.98 |
| NonCF4Spouse | 339107 | 32% (107911) | 68% (231196) | 53415637 | 232 | 40.6 | 0.89 |
| NonCF5 | 345112 | 18% (62232) | 82% (282880) | 62464670 | 219 | 43.5 | 0.97 |
| CF1 | 180647 | 19% (33451) | 81% (147196) | 33631380 | 226 | 41.5 | 1.04 |
| CF2 | 225240 | 15% (33594) | 85% (191646) | 43741746 | 228 | 43.3 | 1.00 |
| CF3 | 184410 | 25% (45891) | 75% (138519) | 34335377 | 246 | 42.8 | 0.87 |
| CF4 | 266135 | 18% (28593) | 82% (217270) | 45559961 | 203 | 43.2 | 0.84 |
| CF5 | 220356 | 18% (39909) | 82% (180447) | 41011286 | 226 | 43.0 | 1.09 |
All odds ratios were within normal range (0.78 to 1.23). All human sequences were removed prior to further bioinformatic analysis.