Table 2.
Standard mean scores (with standard deviation) (range 0–100) for knowledge and PMT constructions at baseline and followups for VFOKa.
| Baseline | 3 months | 6 months | 12 months | |
|---|---|---|---|---|
| Knowledge | ||||
| Pregnancy/contraceptives | 51.45 (16.54) | 52.84 (17.18) | 52.58 (15.89) | 47.54 (18.47)** |
| STIs | 57.53 (18.55) | 65.35 (17.06)*** | 62.14 (19.93)** | 56.32 (20.90) |
| HIV/AIDS | 56.76 (19.24) | 71.06 (20.52)*** | 65.26 (23.66)*** | 65.54 (20.75)*** |
|
| ||||
| PMT-threat appraisal | ||||
| Extrinsic rewards | 35.70 (18.58) | 27.24 (17.38)*** | 28.08 (17.40)*** | 24.25 (14.68)*** |
| Intrinsic rewards | 38.83 (22.28) | 39.43 (21.96) | 47.80 (24.07)*** | 39.29 (20.18) |
| Perceived severity-pregnancy | 31.90 (21.09) | 31.16 (17.12) | 32.38 (19.32) | 27.04 (17.39)** |
| Perceived severity-HIV/AIDS | 48.28 (17.45) | 47.85 (15.42) | 45.00 (17.48)*** | 45.34 (16.55)** |
| Perceived vulnerability-sex | 45.19 (16.15) | 44.50 (14.27) | 42.91 (18.63)* | 37.81 (14.69)*** |
| Perceived vulnerability-HIV/AIDS | 42.41 (16.21) | 56.90 (17.79)*** | 48.27 (19.71)*** | 52.59 (18.94) *** |
|
| ||||
| PMT-coping appraisal | ||||
| Self-efficacy condom use | 50.35 (33.45) | 76.63 (24.32)*** | 83.80 (21.66)*** | 86.63 (18.35)*** |
| Self-efficacy abstinence | 80.95 (31.36) | 89.96 (23.96)*** | 90.25 (22.92)*** | 91.16 (23.04)*** |
| Response efficacy | 71.19 (23.34) | 81.23 (18.89)*** | 76.79 (21.86)** | 77.50** |
| Response cost | 36.06 (17.32) | 33.49 (19.17)* | 38.28 (18.24) | 35.76 (15.76) |
aSignificance calculated on adjusted mean change between baseline and each followup. Multilevel modeling (MLM) analysis adjusted for intervention group, evaluation times, interaction between intervention group and evaluation times, age, gender, religious group (any religion versus nonreligion), and socio-economic status.
*P < .05; **P < .01; ***P < .001.
PMT: Protection Motivation Theory; VFOK: Vietnamese Focus on Kids.