Table 4.
Main predictors of the use of SMS
| Use sms | ||||||
|---|---|---|---|---|---|---|
| Low frequency of use | Mid/high frequency of use | |||||
| OR1 | (95% CI) | P -value | OR2 | (95% CI) | P -value | |
| CRUDE OR | ||||||
| Gender | ||||||
| Male | 1.00 | <0.001 | 1.00 | <0.001 | ||
| Female | 2.15 | (1.63-2.85) | 3.0522 | (2.40-3.88) | ||
| Social class | ||||||
| Disadventaged-M | 1.00 | <0.001 | 1.00 | <0.001 | ||
| Most favored_NM | 1.81 | (1.33-2.45) | 3.13 | (2.41-4.06) | ||
| Educational level | ||||||
| <Secondary | 1.00 | <0.001 | 1.00 | <0.001 | ||
| ≥Secondary | 1.972 | (1.49-2.60) | 3.73 | (2.93-4.75) | ||
| Age Group | ||||||
| >65 | 1.00 | 1.00 | ||||
| 46-65 | 2.82 | (1.75-4.56) | <0.001 | 3.87 | (2.36-6.36) | <0.001 |
| 36-45 | 7.08 | (4.06-12.32) | <0.001 | 20.10 | (11.57-34.95) | <0.001 |
| 18-35 | 7.59 | (4.12-13.98) | <0.001 | 46.13 | (25.59-83.16) | <0.001 |
| Fagerström test | ||||||
| High | 1.00 | 1.00 | ||||
| Medium | 1.62 | (1.01-2.63) | 0.177 | 2.19 | (1.44-3.35) | <0.001 |
| Low | 1.38 | (0.86-2.21) | 0.047 | 2.18 | (1.44-3.30) | <0.001 |
| ADJUSTED OR* | ||||||
| Gender | ||||||
| Male | 1.00 | <0.001 | 1.00 | <0.001 | ||
| Female | 1.8926 | (1.40-2.57) | 2.5186 | (1.88-3.34) | ||
| Social class | ||||||
| Disadventaged-M | 1.00 | 0.122 | 1.00 | 0.001 | ||
| Most favored_NM | 1.33 | (0.93-1.91) | 1.79 | (1.28-2.50) | ||
| Educational level | ||||||
| <Secondary | 1.00 | 0.017 | 1.00 | <0.001 | ||
| ≥Secondary | 1.502 | (1.07-2.10) | 2.31 | (1.69-3.16) | ||
| Age Group | ||||||
| >65 | 1.00 | 1.00 | ||||
| 46-65 | 2.65 | (1.56-4.49) | <0.001 | 3.11 | (1.79-5.37) | <0.001 |
| 36-45 | 7.14 | (3.88-13.13) | <0.001 | 16.2 | (8.76-29.80) | <0.001 |
| 18-35 | 7.04 | (3.65-13.56) | <0.001 | 33.8 | (17.87-64.12) | <0.001 |
| Fagerström test | ||||||
| High | 1.00 | 1.00 | ||||
| Medium | 1.41 | (0.84-2.36) | 0.432 | 1.29 | (0.79-2.13) | 0.307 |
| Low | 1.28 | (0.73-2.05) | 0.196 | 1.473 | (0.89-2.43) | 0.132 |
M = Manual; NM = Non Manual.
Low frequency of use: ≤1 time per week; Mid/high frequency of use: >1 time per week.
OR: Odd Ratio; OR = 1 denotes reference category.
OR1: Odds Ratio of low frequency use vs. no use.
OR2: Odds Ratio of mid/high frequency use vs. no use.
Adjusted OR*: OR adjusted for potential confounders: in the case of gender by age, social class and level of education. Fagerström test was adjusted for all other variables.
P-value derived from the Wald test.