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

BMC Pediatrics

Table 1 Patterns of missingness in the 1-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
2673	+	+	+	+	+	+	+	+	+	+
51	+	+	+	+	+	+	+	-	+	+
101	+	+	+	+	+	+	+	+	-	+
7	+	+	+	+	-	+	+	+	+	+
19	+	+	+	+	+	-	+	+	+	+
29	+	+	+	+	+	+	-	+	+	+
2	+	+	+	-	+	+	+	+	+	+
499	+	+	+	+	+	+	+	+	+	-
6	+	+	+	+	+	+	+	-	-	+
1	+	+	+	-	+	-	+	+	-	+
2	+	+	+	+	+	+	-	+	-	+
1	+	+	+	+	+	+	+	+	-	+
17	+	+	+	+	+	+	+	-	+	-
27	+	+	+	+	+	+	+	+	-	-
1	+	+	+	+	-	+	+	+	+	-
1	+	+	+	+	+	-	+	+	+	-
6	+	+	+	+	+	+	-	+	+	-
2	+	+	+	-	+	+	+	+	+	-
1	+	+	+	+	+	-	+	-	+	-
1	+	+	+	+	+	-	+	+	-	-
1	+	+	+	-	+	+	+	+	-	-
6	+	+	+	+	-	-	-	-	-	+
1	+	+	-	+	-	-	-	-	-	+
9	+	+	+	+	-	-	-	-	-	-
3	+	+	-	+	-	-	-	-	-	-

ISSN: 1471-2431