Table 5.
Comparison of spirometric variables in the first and third trimesters between pregnant smokers and nonsmokers.
| Variable | Nonsmokers (n=103) | Smokers (n=17) | Sig (p) | ||||
|---|---|---|---|---|---|---|---|
| T | Mean±SD | Median (Min - Max) | Mean±SD | Median (Min - Max) | |||
| Absolute | FVC | 1 | 3.70±0.47 | 3.71 (2.71 - 4.89) | 3.48±0.37 | 3.45 (2.65 - 4.39) | 0.042 |
| 3 | 3.56±0.47 | 3.53 (2.67 - 5.00) | 3.36±0.29 | 3.32 (2.92 - 3.94) | 0.074 | ||
| FEV1 | 1 | 3.10±0.40 | 3.11 (2.15 - 4.12) | 2.91±0.32 | 2.96 (2.29 - 3.38) | 0.115 | |
| 3 | 2.99±0.39 | 2.95 (2.12 - 4.05) | 2.78±0.29 | 2.84 (2.12 - 4.05) | 0.039 | ||
| FEV1/FVC | 1 | 0.84±0.06 | 0.84 (0.70 - 0.97) | 0.84±0.05 | 0.84 (0.71 - 0.96) | 0.842 | |
| 3 | 0.84±0.04 | 0.84 (0.73 - 0.98) | 0.83±0.05 | 0.83 (0.72 - 0.95) | 0.154 | ||
| FEF25-75% | 1 | 3.44±0.90 | 3.43 (1.63 - 5.59) | 3.22±0.75 | 3.26 (1.63 - 4.21) | 0.447 | |
| 3 | 3.46±0.76 | 3.42 (1.55 - 5.33) | 3.00±0.69 | 3.07 (1.54 - 4.09) | 0.024 | ||
| PEF | 1 | 6.25±1.14 | 6.22 (3.78 - 9.76) | 5.73±0.81 | 5.92 (4.02 - 7.24) | 0.055 | |
| 3 | 6.11±0.96 | 6.20 (3.72 - 9.06) | 5.65±0.85 | 5.58 (3.89 - 6.83) | 0.078 | ||
| % predicted values | FVC | 1 | 101.95±10.67 | 102 (79 - 126) | 97.41±7.15 | 96 (87 - 110) | 0.064 |
| 3 | 97.78±11.00 | 98 (78 - 128) | 93.71±7.92 | 94 (78 - 111) | 0.131 | ||
| FEV1 | 1 | 100.07±11.11 | 100 (78 - 130) | 95.59±7.63 | 99 (80 - 108) | 0.144 | |
| 3 | 96.70±11.10 | 96 (73 - 125) | 91.06±9.53 | 95 (75 - 106) | 0.081 | ||
| FEV1/FVC | 1 | 97.02±6.62 | 97 (83 - 116) | 97.00±6.39 | 99 (85 - 105) | 0.734 | |
| 3 | 97.79±6.09 | 99 (83 - 114) | 96.00±5.88 | 97 (85 - 103) | 0.252 | ||
| FEF25-75% | 1 | 96.86±25.15 | 94 (51 - 173) | 90.76±23.79 | 93 (53 - 156) | 0.416 | |
| 3 | 97.43±23.54 | 98 (50 - 151) | 85.94±22.30 | 93 (46 - 135) | 0.076 | ||
| PEF | 1 | 81.63±15.02 | 82 (49 - 127) | 84.57±12.47 | 78 (50 - 97) | 0.092 | |
| 3 | 80.36±12.53 | 80 (48 - 117) | 71.71±11.39 | 70 (51 - 88) | 0.021 | ||
Mann-Whitney U-test.