Table 1.
Observed effects of rat chromosome 9 congenic strains on systolic BP
| Blood Pressure, mmHg |
|||||
|---|---|---|---|---|---|
| Congenic Strain | n | S | Congenic | Effect | t-Test |
| S.R(D9Mco72-Resp18) | 30 | 220 [3.34] | 220 [2.90] | 0 | 0.988 |
| S.R(D9Mco14-Resp18-1) | 30 | 212 [4.52] | 209 [5.13] | −3 | 0.969 |
| S.R(D9Mco14-Resp18-2) | 20 | 208 [4.08] | 206 [3.54] | −2 | 0.905 |
| S.R(D9Mco14-Resp18-3) | 20 | 212 [4.52] | 211 [7.66] | −1 | 1.000 |
| S.R(D9Mco95-D9Mco98) | 20 | 219 [4.43] | 194 [4.74] | −25 | <0.001 |
| S.R(D9Mco98-Resp18-1) | 19 | 190 [6.32] | 208 [5.87] | 18 | 0.044 |
| S.R(D9Mco98-Resp18-2) | 20 | 199 [5.19] | 217 [4.71] | 18 | 0.032 |
| S.R(D9Mco95-D9Mco100-1) | 20 | 204 [4.97] | 208 [4.68] | 4 | 0.533 |
| S.R(D9Mco95-D9Mco100-2) | 20 | 219 [4.43] | 212 [3.35] | −7 | 0.638 |
| S.R(D9Mco95-D9Mco102) | 20 | 199 [5.19] | 203 [4.75] | 4 | 0.789 |
| S.R(D9Mco101-Resp18) | 20 | 208 [4.08] | 203 [4.31] | −5 | 0.641 |
Blood pressure (BP) values are means ± SE. Effect, congenic value–Dahl salt-sensitive (S) value. Negative values indicate a decrease in BP compared with the S rat, whereas positive values indicate an increase in BP compared with the S rat. Only male rats were used. Independent t-test was used to compare the means when only 2 strains were in an experiment and ANOVA was used to compare the means when there were more than 2 strains in a single experiment.