Table 1.
Comparative Statistical Analysis of cephalometric norms and present study (Bihar Population)
| Measurement | Caucasian Steiner’s Mean |
S.D | Bihar Population | S.D | t (df=53) | P | |
|---|---|---|---|---|---|---|---|
| 1 | <SNA° | 82 0 | ±3.2 | 83 | ±4.7 | 2.2 | P<0.05 |
| 2 | <SNB* | 80 0 | ±2.9 | 81 | ±3.7 | 2 | P>0.05 |
| 3 | <SND° | 76 0 | ±3.5 | 77 | ±3.8 | 1.8 | P>0.05 |
| 4 | <ANB° | 2 0 | ±1.9 | 2.7 | ±1.6 | 0.37 | P>0.05 |
| 5 | <SL | 51 | ±4.3 | 49.2 | ±5.6 | 1.9 | P>0.05 |
| 6 | <SN to Go Gn° | 32 0 | ±5.1 | 30.1 | ±5.9 | 0.5 | P>0.05 |
| 7 | To SN to Occl° | 14 0 | ±2.9 | 13.2 | ±5.6 | 0.89 | P>0.05 |
| 8 | 1 to NA (angle) | 22 0 | ±1.8 | 24.3 | ±7.1 | 1.6 | P>0.05 |
| 9 | 1 to NA (mm) | 4 mm | ±1.1 | 4.7 | ±2.5 | 0.7 | P>0.05 |
| 10 | 1 to N B (mm) | 4 mm | ±1.2 | 5.9 | ±2.1 | 0.09 | P>0.05 |
| 11 | 1 to N B (Angle) | 25° | ±4.1 | 30.3 | ±6 | 0.07 | P>0.05 |
| 12 | Pog to NB (mm) | 1 | ±0.8 | 0.7 | ±1 | 0.9 | P>0.01 |
| 13 | 1 to 1 (angle) | 131 | ±5 | 121 | ±8 | 0.9 | P>0.05 |
| 14 | SE | 22 | ±2.1 | 23 | ±1.2 | 1.8 | P>0.05 |
| 15 | S line to upper lip | 0 | ±2.2 | 1.5 | ±1.2 | 0.7 | P>0.05 |
| 16 | S line to lower lip | 0 | ±1.2 | 1.8 | ±1.7 | 1.6 | P>0.05 |
*P>0.05 (Non Significant), P<0.05 (Significant at 5% level), P<0.01 (Significant at 1% level)