Relationship of pregnant women’s demographic and obstetrical history characteristics with the PA barriers based on the results of multiple linear regression analysis
| Independent variables | Unstandardised coefficients B | Standardised coefficient beta | 95% CI for B | P value* | R2 | |
| Ethnicity | Fars | −0.34 | −0.01 | −3.79 to 3.11 | 0.845 | 0.083 |
| Lur | 2.52 | 0.11 | 0.14 to 4.91 | 0.038 | ||
| Lak | −4.96 | −0.14 | −8.78 to −1.14 | 0.011 | ||
| Kurdish | Reference category | |||||
| Income (millions of rials) | Undesirable <20 | 0.40 | 0.02 | −1.76 to 2.58 | 0.713 | |
| Fairly favourable: 20–40 | 2.23 | 0.19 | 1.84 to 3.62 | 0.002 | ||
| Optimal: 40–100 | Reference category | |||||
| No of pregnancies | 0.39 | 0.05 | −0.38 to 1.16 | 0.324 | ||
| A habit of exercising before pregnancy | Yes | −1.35 | −0.11 | −2.70 to −0.007 | 0.049 | |
| No | Reference category | |||||
*Significance level: p<0.05, bold entries are significant results and are related to statistical tests.
PA, physical activity.