Table 2.

Risk ratios for mortality (6-24 months) and odds ratios for vaccination by selected covariates in children in two regions of Burkina Faso

Covariate (missing data)	No of deaths	Risk ratio (95% CI) for mortality (6-24 months)	Odds ratio (95% CI) for BCG or diphtheria, tetanus, and pertussis v unvaccinated status
Boys	364	1.00	1.00
Girls	351	0.93 (0.80 to 1.08)	0.95 (0.88 to 1.04)
Area
Pissila	333	1.00	1.00
Yako*	382	0.72 (0.62 to 0.83)	2.97 (2.72 to 3.25)
Age of mother
≥20	624	1.00	1.00
15-19	91	1.22 (0.98 to 1.53)	0.79 (0.69 to 0.90)
Paternal factors
Age† (n=307)	695	1.00 (0.99 to 1.01)	1.00 (0.99 to 1.00)
No (0 to 4) of wives at birth of child† (n=497)	683	1.15 (1.07 to 1.24)	1.00 (0.96 to 1.05)
Mode of delivery (n=4327)
Traditional	189	1.00	1.00
Modern	183	1.08 (0.88 to 1.33)	3.12 (2.77 to 3.51)
Dispensary in village
No	527	1.00	1.00
Yes*	188	0.78 (0.66 to 0.92)	2.41 (2.20 to 2.65)
Health service use
Child† (n=1255):
Rarely	310	1.00	1.00
Sometimes	176	1.01 (0.92 to 1.11)	1.58 (1.49 to 1.67)
Frequently	130	1.02 (0.85 to 1.23)	2.50 (2.22 to 2.79)
Family† (n=55):
Rarely	449	1.00	1.00
Sometimes	137	0.87 (0.79 to 0.95)	1.44 (1.37 to 1.52)
Frequently	128	0.76 (0.62 to 0.90)	2.07 (1.88 to 2.31)
Problems during first year
Diarrhoea:
No	501	1.00	1.00
Yes*	214	1.37 (1.17 to 1.61)	1.24 (1.15 to 1.34)
Fever:
No	503	1.00	1.00
Yes	212	1.16 (0.98 to 1.36)	1.54 (1.41 to 1.70)
Cough:
No	584	1.00	1.00
Yes	131	1.19 (0.99 to 1.44)	1.32 (1.18 to 1.48)
Malnutrition† (n=4388):
None	136	1.00	1.00
Mild	143	1.28 (1.11 to 1.47)	1.06 (0.98 to 1.15)
Severe	73	1.64 (1.23 to 2.16)	1.13 (0.96 to 1.32)
Birth season
Nov to Feb	491	1.00	1.00
Mar to Oct*	224	0.83 (0.71 to 0.97)	1.64 (1.50 to 1.80)
Birth period†
Pissila, 1986-8; Yako, 1987-9	328	1.00	1.00
Pissila, 1989-91; Yako, 1990-2	254	0.82 (0.75 to 0.91)	1.01 (0.96 to 1.07)
Pissila, 1992-3; Yako, 1993-6	133	0.67 (0.56 to 0.83)	1.02 (0.92 to 1.14)

^*Adjusted.

^†Quantitative variable.