Table 4.

Self-reported sexual activity and contraceptive among students in Costa Rica, by grade

Grade	Gender	Number of students	Sexually active			Condom use, among sexually active students*			Contraceptive use, among sexually active students*
			N	%	SE (%)	N	%	SE (%)	N	%	SE (%)
7	Both	236	22	5	2	15	73	11	21	98	2
	Female	126	16	6	3	11	81	9	15	97	3
	Male	110	6	3	2	4	53	27	6	100	0
8	Both	217	41	12	4	22	51	11	34	82	8
	Female	127	24	16	6	8	30	16	18	72	15
	Male	88	16	8	4	14	93	4	15	98	2
9	Both	214	43	27	7	31	69	16	38	96	2
	Female	140	28	28	10	17	57	21	23	94	4
	Male	72	14	26	9	14	100	-	14	100	0
10	Both	202	46	21	4	32	75	6	37	81	7
	Female	131	27	22	6	16	70	7	20	77	8
	Male	71	19	20	7	16	86	10	17	90	10
11	Both	42	10	41	8	8	83	15	8	83	15
	Female	22	3	9	7	3	100	-	3	100	-
	Male	20	7	71	18	5	80	18	5	80	18

*Effective sample size of sexually active students may be smaller due to exclusion of observations with missing data on contraceptive use.