Agreement and concordance between married couples regarding family planning utilization and fertility intention in Dukem, Ethiopia

Community based Cross-sectional study was conducted in Dukem town, central Ethiopia from November, 2010 to December, 2010. Dukem town is 37 km away to south east of the capital of Addis Ababa and is divided into four kebeles¹ The town’s total population is 44,009 of which 24,313(55%) are males and 19,696(45%) are females.

The study population comprises married couples aged 15–49 residing in Dukem town that was selected by using systematic random sampling techniques.

Sample size was calculated using single proportion formula as follows;

Where

p=proportion of agreement of couples in sub-Saharan countries on contraceptive use 47%-82% take the minimum proportion [13].

Z α/2= critical value at 95% confidence level of certainty (1.96).

using the above formula sample size for single population proportion the desired sample size is 383.considering non response rate of 10% the total sample size used for the study was 422 married couples.

As shown in (Figure 1) the sample was determined proportional to the size of the total house hold population of each kebele. Systematic sampling method was used to select the households from each kebele, where the sampling interval were the total number of households in each kebele divided by the corresponding number of households to be interviewed in each kebele.

The first household interviewed was determined from the kebele house number register using lottery method. The next household was identified by systematically adding the number of interval to the preceding one. If more than one eligible respondent were found in the selected household, only one respondent was chosen by lottery method. In cases where no eligible is identified in the selected household, the interviewer was moving to the next household.

Data were collected using pretested structured questionnaire, which was administered by the trained data collectors. The interviews were conducted at the respondent’s home and both husband and wives were interviewed on the same day but separately (Figure 1).

Data were entered into Epi info 3.5.1 and analyzed using SPSS 16 soft ware package. First frequencies of the overall distribution of the variables under study were done. Kappa statistics was done to see the level of agreement of couples on family planning utilization and fertility desire.

As observed by others finding an adequate measure for distinguishing between spousal concordance that occurs by chance and actual agreement are methodological difficulty. In addition the Kappa statistics is influenced by the distributions of data across the categories that are used. As Kappa statistics may be influenced by the presence of more than two categories and by high prevalence of the outcome under consideration, we used weighted kappa and prevalence adjusted kappa wherever appropriate [14, 15].

Ethical clearance was obtained from the school of public health, and Addis Ababa University College of health science ethical committee. A formal letter was also submitted to all the concerned bodies to obtain their co-operation. Verbal informed consent was obtained from all study participants after explaining the purpose of the study. The participation was voluntarily and they could withdraw from the study at any time without explanation. Confidentiality was assured and no personality identifying details were recorded.

A total of 422 couples were interviewed. The age range for wives was from 16 to 46 years with mean age of 27.9 and for husband was from 20 to 53 years with mean age of 32.8 years. As indicated in Table 1, majority of men, 383(90.8%) and the women 326(77.2%) reported attending formal education. Most of those who reported attending formal education, 321(76.1%) of men and 297(70.3%) of women attended elementary and high school [grade 10 and below]. About 21% of women and 9% of men were illiterate.

More than half 53.1% of women were married at ages less than 19 years, while only 11.8% men did so. The minimum age at marriage reported for women was 13 years and for men was 15 years. The mean age at marriage was 19.7 and 24.6, and standard deviation 3.9 & 4.7 for women & men respectively.

386(91.5%) had ever born children and the rest did not have. As shown in Figure 2 Out of this about 56.7% had one to two children, 30.3% had three to four children, 7.8% of them had five to six children, and the rest 5.2% had more than six children ever born and the mean number of ever born children for a couple was 2.7.

Among these ever born children 58.5% one to two children, about 31.1% three-four children, 3.5% five to six children, and 3.9% more than six children respectively were alive children. The mean number of alive children was 2.5 (Figure 2).

About 65.9% of the respondents wanted to have additional children and the rest did not. More than half (52.6%) of a couple wanted to have three to four children, while about one third of couple wanted to have one to two children. The mean of ideal child desire was 3.4 children, where 1.9 was for male child and 1.5 was for female child. The minimum was 1 child and the maximum was 12 children (Figure 3).

Table 2 shows proportional agreement of the number of living children as reported by husbands and wives. Overall in 99.7%(95% CI: 99.2 to 100.2%) of cases, both partners reported the same number of living children and the kappa statistic was 0.99(p<=0.000), which corresponds to excellent agreement. In one case where there was a difference in reported number of children, it was husband who reported more number of children.

As indicated in Table 2, proportional agreement for ever use of contraception irrespective of the method showed 95.5%(95% CI: 94.5% to 96.5%) overall agreement between husbands and wives. The kappa statistic was 0.84(P<=0.000), which corresponds to excellent agreement. Ever use of contraception was reported by sixteen 3.8% wives while husbands reported that they had never used any contraception. In most of the cases, the wives had taken oral pills and it could be that they did not inform their husbands regarding this. Ever use of contraception was reported by three 0.7% husbands when wives reported otherwise. This difference may be attributable to differences of perception between spouses regarding traditional methods or may be indicative of existence of multiple sexual partners condom use.

As shown in Table 2 Current use of contraception as reported by husbands and wives showed 95.7%(95% CI 94.7 to 96.7%) over all agreement. The kappa statistic was 0.87(P<=0.000), which corresponds to excellent agreement. Current use of contraception was reported by twelve 2.8% wives while the husband reported using none. Six 1.4% husbands reported current use of contraception while their wives did not. It may be inferred that there is covert contraceptive use by the couples.

Proportional agreement for fertility desire showed agreement between husband and wives is 95.9%(95% CI: 94.01 to 97.8%) of cases, 31% of couples wanting no more children and 65.9% wanting more children. The kappa statistic was 0.91(P<=0.000). The disagreement was unevenly divided across the remaining two cells, with 4 cases where the wife desired more children while the husband did not and 13 cases where the husband desired more children but wives did not.

Proportional agreement of ideal family size showed that in 71.6%(95% CI: 67 to 76%) of cases there was agreement between husband and wife. The kappa statistics was 0.63(P-value 0.000). In 14.5% of cases, the husband wanted more children than the wife did, while in 13.9% of cases the wife wanted more children than the husband did.

Cross tabulation of attitude towards contraception shows that there was 94.8%(95% CI: 92.8 to 97%) overall agreement between husbands and wives in attitude toward contraception; both partners approved of contraception in 90.3% cases. The unadjusted kappa statistic was 0.6(P<=0.000) which corresponds to good agreement. In 3.8% of cases, wives approved of contraception whereas husbands did not, and in 1.4% of cases, husbands approved of contraception where as wives did not.