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Table 3 Forward selection conditional logistic regression model

From: Health service use in families where children enter public care: a nested case control study using the General Practice Research Database

Exposure of interest Cases
n = 147
Controls
n = 538
Odds ratio (95% confidence intervals P value
Maternal mental illness 75 (51%) 132 (25%) 2.51 (1.55-4.05) < 0.001
Maternal age 15-19 years old 31 (21%) 4 (0.6%) 2.45 (1.11-5.42) 0.027
Maternal age 20-24 years old 13 (9%) 28 (5%) 2.37 (1.38-4.06) 0.002
Maternal age 25-29 years old 41 (28%) 117 (22%) 1.00 0.236
Maternal age 30-34 years old 30 (20%) 197 (37%) 1.43 (0.81-2.53) 0.222
Maternal age 35-39 years old 30 (20%) 142 (26%) 2.90 (1.36-6.18) 0.006
Maternal age 40-44 years old 15 (10%) 39 (7%) 6.21 (2.50-15.4) < 0.001
Maternal age 45-49 years old 14 (10%) 13 (2%) 24.4 (2.30-258) 0.008
SES quintile 1 15 (10%) 131 (23%) 1.00 -
SES quintile 2 18 (12%) 104 (19%) 2.41 (1.01-5.74) 0.047
SES quintile 3 32 (22%) 94 (17%) 2.83 (1.25-6.39) 0.012
SES quintile 4 41 (28%) 119 (22%) 3.40 (1.58-7.32) 0.002
SES quintile 5 41 (28%) 90 (17%) 7.14 (2.92-17.4) < 0.001
Maternal drug misuse 7 (5%) 1 (0.2%) 28.8 (2.29-363) 0.009
Any non attendance at primary or secondary care 57 (39%) 101 (19%) 2.42 (1.42-4.14) 0.001
Child mental illness 34 (23%) 43 (8%) 2.65 (1.42-4.96) 0.002
Maternal contraception 41 (28%) 198 (37%) 0.52 (0.31-0.87) 0.013
Child admission to hospital 12 (8%) 12 (2%) 3.31 (1.21-9.02) 0.019