A prognostic tool to identify adolescents at high risk of becoming daily smokers

BMC Pediatrics

Table 2 Patterns of missingness in the 2-year risk analysis.

Number of observations	Gender	Age	Ever smoked	Daily smoker	Friends smoke	Ever felt like need a cigarette	Drink alcohol	Parents smoke	Siblings smoke	Mother's education
1238	+	+	+	+	+	+	+	+	+	+
29	+	+	+	+	+	+	+	-	+	+
13	+	+	+	+	+	+	+	+	-	+
7	+	+	+	+	-	+	+	+	+	+
7	+	+	+	+	+	-	+	+	+	+
13	+	+	+	+	+	+	-	+	+	+
3	+	+	+	-	+	+	+	+	+	+
219	+	+	+	+	+	+	+	+	+	-
1	+	+	+	+	+	+	+	-	-	+
8	+	+	+	+	+	+	+	-	+	-
4	+	+	+	+	+	+	+	+	-	-
1	+	+	+	+	-	+	+	+	+	-
3	+	+	+	+	+	+	-	+	+	-
14	+	+	+	+	-	-	-	-	-	+
1	+	+	+	-	-	-	-	-	-	+
6	+	+	+	+	-	-	-	-	-	-
3	+	+	+	-	-	-	-	-	-	-

ISSN: 1471-2431