Table 2.
Predictors of difficult bag mask ventilation in the studied groups
| Group S (n=100), n (%) | Group P (n=100), n (%) | 95% CI | P | |
|---|---|---|---|---|
| Mallampati | ||||
| I | 51.0 (51) | 61.0 (61) | −0.04, 0.24 | 0.154 |
| II | 49.0 (49) | 39.0 (39) | ||
| Mouth opening (cm) | 45.20±5.79 | 46.48±6.61 | −3.01, 0.45 | 0.147 |
| Thyromental distance (cm) | 84.47±12.59 | 81.80±11.80 | −0.73, 6.07 | 0.123 |
| Presence of macroglossia | 5.0 (5) | 7.0 (7) | −0.05, 0.09 | 0.552 |
| Receding mandible | 21.0 (21) | 27.0 (27) | −0.06, 0.18 | 0.321 |
| Lack of teeth | 18.0 (18) | 23.0 (23) | −0.06, 0.16 | 0.381 |
| Presence of beard | 6.0 (6) | 9.0 (9) | −0.04, 0.1 | 0.421 |
| History of snoring | 56.0 (56) | 57.0 (57) | −0.13, 0.15 | 0.887 |
Data are expressed as mean±SD, number and %. 95% CI: 95% confidence interval of the mean difference between both groups. SD=Standard deviation