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Table 1 Associations of selected explanatory variables and having had sexual intercourse 12 months prior to the survey in Zambia.

From: Harmful lifestyles' clustering among sexually active in-school adolescents in Zambia

Factor

Had sexual intercourse

Unadjusted OR (95% CI)

 

Yes, N* (%)*

No, N* (%)**

 

Age

   

<15

52 (33.9)

500 (48.1)

1

15

41 (24.1)

293 (22.6)

1.04 (1.02–1.06)

16+

78 (42.0)

393 (29.3)

1.40 (1.37–1.42)

Sex

   

Male

110 (66.3)

541 (51.8)

1

Female

63 (33.7)

624 (48.2)

0.74 (0.73–0.75)

Number of close friends

   

0

15 (8.2)

182 (15.7)

1

1

69 (36.9)

356 (28.0)

1.50 (1.47–1.54)

2 +

101 (54.9)

655 (56.2)

1.12 (110–114)

Parental supervision

   

Never

35 (23.7)

207 (19.5)

1

Rarely or sometimes

70 (40.1)

453 (42.9)

1.07 (1.05–1.09)

Most of the times or always

48 (30.2)

398 (37.6)

0.82 (0.81–0.84)

Days drank alcohol past 30 days

   

0

60 (44.3)

563 (67.0)

1

1 to 2

24 (22.1)

98 (13.2)

1.36 (1.33–1.39)

3+

38 (33.5)

140 (19.8)

1.37 (1.34–1.41)

Number of time ever used marijuana

   

0

95 (50.6)

870 (72.9)

1

1 to 2

51 (30.8)

172 (15.3)

1.54 (1.51–1.57)

3+

30 (18.7)

129 (11.8)

1.21 (1.19–1.24)

Number of times ever been drunk

   

0

90 (48.8)

761 (65.1)

1

1 to 2

49 (28.1)

237 (21.4)

1.10 (1.08–1.13)

3+

42 (23.1)

141 (13.5)

1.44 (1.37–1.44)

  1. Row frequencies not adding up because of missing information
  2. * unweighted frequencies
  3. ** weighted percents