Table 3.
Cervical curvatures in the two study groups at different follow-up time points
| Control group | Observation group | P valuea | |||||
|---|---|---|---|---|---|---|---|
| Kyphotic | Straight | Lordotic | Kyphotic | Straight | Lordotic | ||
| Baselineb | 8 (0.23) | 27 (0.77) | 0 (0.00) | 9 (0.29) | 26 (0.71) | 0 (0.00) | 0.782 |
| 3-monthc | 7 (0.22) | 25 (0.78) | 0 (0.00) | 7 (0.21) | 25 (0.76) | 1 (0.03) | 0.774 |
| 6-monthd | 5 (0.16) | 25 (0.81) | 1 (0.03) | 6 (0.19) | 22 (0.71) | 3 (0.10) | 0.836 |
| 12-monthe | 4 (0.17) | 17 (0.74) | 2 (0.09) | 2 (0.80) | 16 (0.64) | 7 (0.28) | 0.075 |
NA: not applicable; a: comparison of the proportion of participants with lordotic curvature between groups at different follow-up time points; b: 70 participants (35 in the control group, 35 in the observation group) were included in the statistical analysis at the baseline; c: 65 participants (32 in the control group, 33 in the observation group) were included in the statistical analysis at the 3-month follow-up; d: 61 participants (30 in the control group, 31 in the observation group) were included in the statistical analysis at the 6-month follow-up; e: 48 participants (23 in the control group, 25 in the observation group) were included in the statistical analysis at the 12-month follow-up