Table 2 Summary of direction and magnitude in trends of sexual behaviour
| Indicator | Direction of trend | Magnitude | Note |
| Age at sexual debut | Girls: 16.7–>18.2 | Small dip in 1998–2001, same trend for boys and girls | |
| Years 1997–2006 | Increasing | Boys: 18.5–>19.9 | |
| Primary abstinence | Dip in 1999–2002 for girls, dip in 1998–2000 for boys | ||
| Years 1993–2006 | Increasing | 72–>83% | |
| Secondary abstinence | |||
| Years 1997–2006 | |||
| Age 13–19 | Increasing | Girls: 12–>14% | Same trend for boys and girls |
| All other ages | No change | Boys: 10–>21% | |
| Pregnancy | |||
| Years 1996–2003 | |||
| Age 13–20 | Increasing | 8–>10% | Pregnancy among never married young women |
| Age 21–29 | Increasing | 53–>81% | |
| Years 2003–2005 | |||
| Age 13–20 | Decreasing | 10–>6% | |
| Age 21–29 | Decreasing | 81–>66% | |
| Age at first marriage | |||
| Years 1998–2006 | |||
| Age 13–29 (women) | Increasing | 19.0–>19.4 | |
| Age 13–29 (men) | Increasing | 24.9–>25.3 | |
| Time (years) from sexual debut to first marriage | |||
| Years 1998–2006 | |||
| Age 13–29 (women) | No change | ∼2.2 throughout | |
| Age 13–29 (men) | Decreasing | 7.9–>6.9 years | |
| ⩾1 casual partners in past year | |||
| Years 1997–2001 | Increasing | Men: 11.6–>12.6% | Same trend for all groups except men aged 20–24 years and 25–34 years who showed a continuous rise in casual partners throughout the entire period (1997–2006) |
| Women: 1.4–>3.6% | |||
| Years 2001–2006 | Decreasing | Men: 12.6–>10.2% | |
| Women: 3.6–>1.4% | |||
| ⩾2 casual partners in past year | Similar trend as for ⩾1 casual partners except that the 35–44 age group showed a continuous increase throughout | ||
| Years 1997–2006 | |||
| Condom use ever | |||
| Years 1993–2006 | Increasing | Men: 12.5–>46.1% | Same trend for men and women, all ages |
| Women: 4.0–>30.7% | |||
| Condom use at last sex with any partner | |||
| Years 1996–2003 | |||
| Men | Decreasing | 18.9–>14.7% | Women: Although a generally rising trend throughout, women experienced a dip in condom use between 2001 and 2005 |
| Women | Increasing | 5.7–>8.0% | |
| Years 2003–2006 | |||
| Men | Increasing | 14.7–>18.1% | |
| Women | Increasing | 8.0–>9.9% | |
| Condom use at last sex with a casual | |||
| Years 1997–2005 | |||
| Age 20–24 | Decreasing | 74.1–>50.7% | Among those age 13–19 years, condom use with a casual decreased from 1997 to 2000, then increased from 2000 to 2005 |
| Age 25–34 | Decreasing | 63.8–>58.2% | |
| Age 35–44 | Increasing | 38.9–>47.6% | |
| Age 45+ | Increasing | 10.0–>31.3% | |
| Age 13–19 | Decrease–>Increase | 50.6–>48.2% |
