Table 4. Stratified sample analysis between users and nonusers with SLT and BQ use: GEE.
| Characteristic Behaviors | Nonusers | Users | |||
|---|---|---|---|---|---|
| Pre– 1228 | Pre– 912 | ||||
| Post—1085 | Post– 886 | ||||
| β (95% CI) | p-value | β (95% CI) | p-value | ||
| Knowledge score (a) | |||||
| Pre | Ref. | Ref. | |||
| Post | 0.362 (0.287,0.437) | <0.001 | 0.651 (0.532,0.770) | <0.001 | |
| Interaction (TimexCondition) | |||||
| InterventionxPost | 0.186 (0.064,0.308) | 0.003 | 0.129 (-0.033,0.291) | 0.119 | |
| Age | |||||
| < 12 years | Ref. | Ref. | |||
| ≥ 12 years | 0.184 (0.084,0.283) | <0.001 | 0.136 (0.001,0.272) | 0.048 | |
| Gender | |||||
| Male | Ref. | Ref. | |||
| Female | -0.167 (-0.257,0.066) | 0.001 | -0.080 (-0.199,0.40) | 0.191 | |
| Weekly pocket money | |||||
| ≤ 100 | Ref. | Ref. | |||
| > 100 | -0.178 (-0.314,0.043) | 0.010 | 0.056 (-0.199,0.312) | 0.666 | |
| School type | |||||
| Private | Ref. | Ref. | |||
| Government | 0.032 (-0.070,0.133) | 0.540 | 0.224 (0.103,0.344) | <0.001 | |
| Perception scores regarding use (b) | |||||
| Pre | Ref. | Ref. | |||
| Post | 0.083 (0.040,0.126) | <0.001 | 0.210 (0.148,0.272) | <0.001 | |
| Interaction (TimexCondition) | |||||
| InterventionxPost | 0.111 (0.049,0.173) | <0.001 | 0.157 (0.074,0.241) | <0.001 | |
| Age | |||||
| < 12 years | Ref. | Ref. | |||
| ≥ 12 years | -0.027 (-0.078,0.023) | 0.287 | -0.102 (-0.179, -0.025) | 0.009 | |
| Gender | |||||
| Male | Ref. | Ref. | |||
| Female | -0.001(-0.055,0.054) | 0.978 | -0.075 (-0.154,0.005) | 0.065 | |
| Weekly pocket money | |||||
| ≤ 100 | Ref. | Ref. | |||
| > 100 | -0.036 (-0.110,0.039) | 0.352 | -0.149 (-0.264, -0.033) | 0.012 | |
| School type | |||||
| Private | Ref. | Ref. | |||
| Government | -0.045 (-0.104,0.014) | 0.134 | -0.178 (-0261, -0.096) | <0.001 | |
| Perception scores regarding quitting (c) | |||||
| Pre | Ref. | Ref. | |||
| Post | 0.116 (0.064,0.168) | <0.001 | 0.182 (0.113,0.250) | <0.001 | |
| Interaction (TimexCondition) | |||||
| InterventionxPost | 0.047 (-0.027,0.121) | 0.211 | 0.087 (-0.015,0.189) | 0.094 | |
| Age | |||||
| < 12 years | Ref. | Ref. | |||
| ≥ 12 years | 0.041 (-0.019,0.100) | 0.180 | 0.025 (-0.055,0.105) | 0.541 | |
| Gender | |||||
| Male | Ref. | Ref. | |||
| Female | 0.064 (0.005,0.123) | 0.035 | 0.041 (-0.034,0.116) | 0.286 | |
| Weekly pocket money | |||||
| ≤ 100 | Ref. | Ref. | |||
| > 100 | 0.023 (-0.070,0.116) | 0.631 | 0.096 (-0.067,0.260) | 0.248 | |
| School type | |||||
| Private | Ref. | Ref. | |||
| Government | 0.058 (-0.001, -0.116) | 0.053 | 0.100 (0.029,0.172) | 0.006 | |
(a): Adjusted model for knowledge score regarding the ill effects of SLT and/or BQ with the following variables: age, gender, school type and weekly pocket money.
(b): Adjusted model for perception score regarding SLT and/or BQ use with the following variables: age, gender, school type and weekly pocket money.
(c): Adjusted model for perception score regarding quitting the use of SLT and/or BQ with the following variables: age, gender, school type and weekly pocket money.
β: Beta coefficient.
CI: Confidence Interval.