Table 2.
Factors associated with late receipt of the first DTP vaccine.
| Measure | Weighted % late (no.) | Unadjusted RR (95% CI) | p-value | Prob > F | Adjusted RR (95% CI) | p-value | |
|---|---|---|---|---|---|---|---|
| Maternal age at child's birth - per 5 year increase | 0.78 (0.60–1.00) | 0.053 | 0.0525 | 0.73 (0.53–1.00) | 0.053 | ||
| Maternal academic qualifications | Degree | 1.2% (2 6 5) | 0.23 (0.07–0.72) | 0.012 | 0.0109 | 0.27 (0.08–0.90) | 0.034 |
| Diploma / A levels | 2.4% (3 0 9) | 0.46 (0.20–1.03) | 0.060 | 0.54 (0.21–1.43) | 0.21 | ||
| O level / GCSE | 5.3% (8 6 7) | 1 | 1 | ||||
| Other | 3.6% (23) | 0.68 (0.12–4.02) | 0.67 | 0.60 (0.10–3.51) | 0.56 | ||
| None | 8.9% (3 1 6) | 1.70 (1.04–2.78) | 0.035 | 1.49 (0.90–2.46) | 0.12 | ||
| Maternal social class | Mangement & professional | 2.7% (4 6 7) | 1 | 0.0000 | 1 | ||
| Intermediate | 5.8% (2 8 3) | 2.17 (0.95–4.96) | 0.067 | 1.13 (0.48–2.65) | 0.77 | ||
| Small employer & self-employed | 0.0% (64) | n/a | <0.0001 | n/a | <0.0001 | ||
| Lower supervisory & technical | 2.4% (1 1 4) | 0.89 (0.23–3.46) | 0.86 | 0.30 (0.07–1.37) | 0.12 | ||
| Semi-routine & routine | 5.5% (7 0 7) | 2.07 (0.97–4.39) | 0.058 | 0.62 (0.28–1.38) | 0.24 | ||
| Never employed | 10.1% (1 2 5) | 3.79 (1.73–8.29) | 0.001 | 0.94 (0.35–2.49) | 0.89 | ||
| Maternal work status | In work / on leave | 3.0% (9 2 0) | 1 | 0.0016 | |||
| Not in work / on leave | 6.7% (8 6 2) | 2.25 (1.37–3.67) | 0.002 | ||||
| Smoked during pregnancy | No or gave up | 3.9% (1295) | 1 | 0.0257 | |||
| Yes | 7.4% (4 8 7) | 1.90 (1.08–3.34) | 0.026 | ||||
| Whether breastfed | Ever | 3.3% (1083) | 1 | 0.0056 | |||
| Never | 7.1 % (6 9 9) | 2.18 (1.27–3.77) | 0.006 | ||||
| Sex | Female | 3.7% (8 6 3) | 1 | 0.0454 | 1 | ||
| Male | 5.8% (9 1 9) | 1.57 (1.01–2.44) | 0.045 | 1.53 (1.01–2.31) | 0.047 | ||
| Birth weight | <2.5Kg | 6.0% (90) | 1.44 (0.63–3.29) | 0.38 | 0.0725 | 0.83 (0.34–1.92) | 0.66 |
| 2.51 to 3 Kg | 3.7% (2 7 7) | 0.87 (0.39–1.95) | 0.74 | 0.91 (0.43–1.94) | 0.80 | ||
| 3.01 to 3.5Kg | 4.2% (6 9 3) | 1 | 1 | ||||
| 3.51 to 4Kg | 4.8% (5 1 3) | 1.14 (0.55–2.36) | 0.73 | 1.14 (0.58–2.23) | 0.71 | ||
| >4 Kg | 8.2% (2 0 6) | 1.95 (1.03–3.69) | 0.040 | 2.02 (1.09–3.73) | 0.025 | ||
| Admitted to special / neonatal intensive care | No | 4.4% (1636) | 1 | 0.0271 | 1 | ||
| Yes | 9.8% (1 4 5) | 2.24 (1.10–4.57) | 0.027 | 3.15 (1.65–5.99) | 0.001 | ||
| Birth order | First born | 2.5% (7 5 1) | 1 | 0.0005 | 1 | ||
| Has older natural siblings | 6.6% (1031) | 2.61 (1.55–4.40) | <0.0001 | 3.82 (1.97–7.38) | <0.0001 | ||
| Total number of children in HH | 1 | 2.5% (7 4 8) | 1 | 0.0001 | |||
| 2 or 3 | 6.0% (9 2 1) | 2.37 (1.38–4.07) | 0.002 | ||||
| 4 or more | 11.5% (1 1 3) | 4.55 (2.35–8.81) | <0.0001 | ||||
| Household income per annum | £0.00 to <£10,400 | 6.2% (4 9 3) | 0.94 (0.56–1.55) | 0.79 | 0.0279 | ||
| £10,400 to <£20,800 | 6.6% (5 8 7) | 1 | |||||
| £20,800 to <£31,200 | 1.2% (3 4 2) | 0.18 (0.06–0.50) | 0.001 | ||||
| £31,200 to <£52,000 | 2.9% (2 2 4) | 0.44 (0.13–1.47) | 0.18 | ||||
| £52,000 and above | 2.3% (60) | 0.35 (0.08–1.50) | 0.15 | ||||
| Income weighted quintile | Lowest quintile (lowest income) | 6.9% (4 4 5) | 1 | 0.0007 | 1 | ||
| Second quintile | 6.2% (4 0 3) | 0.90 (0.49–1.65) | 0.72 | 1.07 (0.55–2.08) | 0.83 | ||
| Third quintile | 5.9% (3 5 5) | 0.86 (0.54–1.37) | 0.52 | 1.25 (0.70–2.23) | 0.45 | ||
| Fourth quintile | 0.5% (3 1 8) | 0.07 (0.02–0.22) | <0.0001 | 0.15 (0.04–0.51) | 0.003 | ||
| Highest quintile | 2.9% (2 6 1) | 0.43 (0.17–1.08) | 0.071 | 0.82 (0.33–2.06) | 0.68 | ||
| Housing tenure | Own or mortgage | 3.4% (1090) | 1 | 0.0133 | |||
| Rent | 7.2% (6 0 2) | 2.13 (1.24–3.65) | 0.007 | ||||
| Living elsewhere | 5.1% (90) | 1.51 (0.56–4.07) | 0.41 | ||||
| Whether partner is in work | In work / on leave | 4.0% (1255) | 1 | 0.0185 | |||
| Not in work / on leave | 8.8% (1 7 8) | 2.21 (1.15–4.24) | 0.019 |
RR - Risk Ratio
Missing Values: Maternal academic qualifications 2; Maternal social class 22; Birth weight 3; Admission to SCBU 1; Household income 76; Partner in work 349