Multivariate logistic regression of factors associated with rotavirus vaccination series initiation and completion
| Characteristics* | Series initiation† | Series completion‡ | ||||||
| Received 0 doses, % (n) | Received ≥1 dose, % (n) | Unadjusted OR for not initiating§ (95% CI) | Adjusted OR for not initiating§ (95% CI) | Received 0 or one doses, % (n) | Received at least two doses, % (n) | Unadjusted OR for not completing¶ (95% CI) | Adjusted OR for not completing¶** (95% CI) | |
| Income | ||||||||
| Q5 (highest) | 10.05 (1688) | 89.95 (15104) | Ref | N/A | 13.55 (2276) | 86.45 (14516) | Ref | N/A |
| Q4 | 11.84 (1744) | 88.16 (12982) | 1.20 (1.12 to 1.29) | N/A | 15.79 (2325) | 84.21 (12401) | 1.20 (1.12 to 1.27) | N/A |
| Q3 | 13.28 (1449) | 86.72 (9465) | 1.37 (1.27 to 1.48) | N/A | 17.58 (1919) | 82.42 (8995) | 1.36 (1.27 to 1.45) | N/A |
| Q2 | 14.50 (1683) | 85.50 (9927) | 1.52 (1.41 to 1.63) | N/A | 19.40 (2252) | 80.60 (9358) | 1.54 (1.44 to 1.64) | N/A |
| Q1 (lowest) | 16.96 (2060) | 83.04 (10086) | 1.83 (1.71 to 1.96) | N/A | 22.53 (2736) | 77.47 (9410) | 1.85 (1.74 to 1.97) | N/A |
| Location of residence | ||||||||
| Urban | 11.06 (6008) | 88.94 (48336) | Ref | N/A | 15.37 (8351) | 84.63 (45993) | Ref | N/A |
| Rural | 22.09 (2616) | 77.91 (9228) | 2.28 (2.17 to 1.92) | N/A | 26.65 (3157) | 73.35 (8687) | 2.00 (1.91 to 2.10) | N/A |
| Income and location of residence (interaction term) | ||||||||
| Urban-Q5 | 9.63 (1446) | 90.37 (13564) | Ref | Ref | 13.02 (1954) | 86.98 (13056) | Ref | Ref |
| Urban-Q4 | 10.83 (1369) | 89.17 (11270) | 1.14 (1.05 to 1.23) | 1.08 (1.00 to 1.17) | 14.82 (1873) | 85.18 (10766) | 1.16 (1.09 to 1.25) | 1.09 (1.02 to 1.17) |
| Urban-Q3 | 12.06 (1025) | 87.94 (7476) | 1.29 (1.18 to 1.40) | 1.17 (1.07 to 1.28) | 16.48 (1401) | 83.52 (7100) | 1.32 (1.22 to 1.42) | 1.19 (1.10 to 1.29) |
| Urban-Q2 | 12.05 (1087) | 87.95 (7932) | 1.29 (1.18 to 1.40) | 1.12 (1.03 to 1.22) | 16.88 (1522) | 83.12 (7497) | 1.36 (1.26 to 1.50) | 1.17 (1.09 to 1.26) |
| Urban-Q1 | 11.78 (1081) | 88.22 (8094) | 1.25 (1.15 to 1.36) | 1.02 (0.93 to 1.11) | 17.45 (1601) | 82.55 (7574) | 1.41 (1.31 to 1.52) | 1.14 (1.06 to 1.23) |
| Rural-Q5 | 13.58 (242) | 86.42 (1540) | 1.47 (1.27 to 1.71) | 1.18 (1.02 to 1.37) | 18.07 (322) | 81.93 (1460) | 1.47 (1.29 to 1.68) | 1.16 (1.01 to 1.32) |
| Rural-Q4 | 17.97 (375) | 82.03 (1712) | 2.06 (1.82 to 2.33) | 1.61 (1.42 to 1.83) | 21.66 (452) | 78.34 (1635) | 1.85 (1.65 to 2.07) | 1.42 (1.26 to 1.60) |
| Rural-Q3 | 17.57 (424) | 82.43 (1989) | 2.00 (1.78 to 2.25) | 1.54 (1.35 to 1.72) | 21.47 (518) | 78.53 (1895) | 1.83 (1.64 to 2.04) | 1.36 (1.22 to 1.52) |
| Rural-Q2 | 23.00 (596) | 77.00 (1995) | 2.80 (2.52 to 3.12) | 1.93 (1.73 to 2.16) | 28.17 (730) | 71.83 (1861) | 2.62 (2.38 to 2.89) | 1.78 (1.61 to 1.98) |
| Rural-Q1 | 32.95 (979) | 67.05 (1992) | 4.61 (4.20 to 5.06) | 3.16 (2.86 to 3.48) | 38.20 (1135) | 61.80 (1836) | 4.13 (3.78 to 4.51) | 2.79 (2.55 to 3.07) |
| Maternal age (in years) | ||||||||
| Over 40 | 15.66 (250) | 84.34 (1346) | Ref | Ref | 20.11 (321) | 79.89 (1275) | Ref | Ref |
| 36–40 | 11.87 (1014) | 88.13 (7529) | 0.73 (0.62 to 0.84) | 0.76 (0.65,0.89) | 15.50 (1324) | 84.50 (7219) | 0.73 (0.64 to 0.83) | 0.77 (0.67 to 0.89) |
| 31–35 | 11.53 (2582) | 88.47 (19 807) | 0.70 (0.61 to 0.81) | 0.84 (0.73 to 0.97) | 15.11 (3382) | 84.89 (19 007) | 0.71 (0.62 to 0.80) | 0.86 (0.75 to 0.98) |
| 26–30 | 12.50 (2814) | 87.50 (19 706) | 0.77 (0.67 to 0.89) | 1.05 (0.90 to 1.21) | 16.85 (3795) | 83.15 (18 725) | 0.81 (0.71 to 0.91) | 1.11 (0.97 to 1.27) |
| 21–25 | 17.51 (1668) | 82.49 (7858) | 1.14 (0.99 to 1.32) | 1.71 (1.47 to 2.00) | 23.71 (2259) | 76.29 (7267) | 1.24 (1.08 to 1.41) | 1.82 (1.58 to 2.10) |
| Under 21 | 19.43 (411) | 80.57 (1704) | 1.30 (1.09 to 1.54) | 2.48 (2.10 to 2.99) | 27.09 (573) | 72.91 (1542) | 1.48 (1.26 to 1.72) | 2.58 (2.18 to 3.05) |
| No of children in the household | ||||||||
| 1 | 8.15 (2307) | 91.85 (26 002) | Ref | Ref | 11.68 (3307) | 88.32 (25 002) | Ref | Ref |
| 2 | 12.79 (3013) | 87.21 (20 551) | 1.65 (1.56 to 1.75) | 1.90 (1.78 to 2.01) | 17.07 (4022) | 82.93 (19 542) | 1.56 (1.48 to 1.64) | 1.82 (1.73 to 1.92) |
| 3 | 18.33 (1748) | 81.67 (7790) | 2.53 (2.37 to 2.71) | 2.96 (2.76 to 3.18) | 23.58 (2249) | 76.42 (7289) | 2.33 (1.20 to 2.48) | 2.82 (2.65 to 3.01) |
| 4 or more | 31.66 (1671) | 68.34 (3607) | 5.22 (4.86 to 5.61) | 6.09 (5.62 to 6.59) | 39.33 (2076) | 60.67 (3202) | 4.90 (2.59 to 5.24) | 5.99 (5.57 to 6.44) |
| Gestation age at birth | ||||||||
| Term (≥36 weeks | 12.94 (8228) | 87.06 (55 378) | Ref | Ref | 17.28 (10 993) | 82.72 (52 613) | Ref | Ref |
| Preterm (<36 weeks) | 16.57 (511) | 83.43 (2572) | 1.34 (1.21 to 1.48) | 1.30 (1.17 to 1.44) | 21.44 (661) | 78.56 (2422) | 1.31 (1.20 to1.43) | 1.26 (1.15 to 1.39) |
| Maternal marital status | ||||||||
| Married | 12.86 (6370) | 87.14 (43 178) | Ref | Ref | 16.59 (8219) | 83.41 (41 329) | Ref | Ref |
| Not married | 13.76 (2316) | 86.24 (14 512) | 1.08 (1.03 to 1.14) | 0.97 (0.91 to 1.02) | 20.01 (3368) | 79.99 (13 460) | 1.26 (1.20 to 1.32) | 1.12 (1.06 to 1.17) |
| Sex | ||||||||
| Male | 13.02 (4406) | 86.98 (29 443) | Ref | Ref | 17.38 (5883) | 82.62 (27 966) | Ref | Ref |
| Female | 13.19 (4333) | 86.81 (28 507) | 1.02 (0.97 to 1.06) | 1.01 (0.96 to 1.06) | 17.57 (5771) | 82.43 (27 069) | 1.01 (0.97 to 1.06) | 1.01 (0.97 to 1.05) |
| Year | ||||||||
| 2015 | 13.19 (4154) | 86.81 (27 341) | Ref | Ref | 17.40 (5479) | 82.45 (29 019) | Ref | Ref |
| 2016 | 13.03 (4585) | 86.97 (30 609) | 1.01 (0.97 to 1.06) | 0.99 (0.94 to 1.03) | 17.55 (6175) | 82.60 (26 016) | 0.99 (0.95 to 1.03) | 1.02 (0.98 to 1.06) |
*Year and sex did not meet the criteria for inclusion in the model (statistical significance >0.35).
†Series initiation is defined as the percent of the cohort who received at least one dose of rotavirus vaccine between 6 weeks and 8 months of age.
‡Series completion is defined as the percent of the cohort who received at least two doses of rotavirus vaccine between 6 weeks and 8 months of age, with at least 28 days between doses.
§Odds of not being vaccinated with rotavirus vaccine compared with receiving at least one dose of the rotavirus vaccine.
¶Odds of not being vaccinated with two doses of the rotavirus vaccine compared with receiving at least two doses of the rotavirus vaccine.
**Adjusted OR controls for all variables in the model and statistically significant interaction.