Table 1. Baseline characteristics of index case-patients, household compounds, and household members, by treatment arm, Kishoregonj, Bangladesh, 2009–2010.
| Characteristic | Intervention | Control |
|---|---|---|
| Index influenza-like illness case-patients | N = 193 | N = 184 |
| Mean age in months (SD) | 121.2 (181.7) | 92.5 (141.0) |
| # (%) of index case-patients less than 5 years old | 119 (62%) | 125 (68%) |
| # (%) of index case-patients less than 2 years old | 64 (33%) | 71 (39%) |
| Male sex | 115 (60%) | 112 (61%) |
| Cough at the time of presentation* | 119 (75%) | 114 (75%) |
| Sore throat at the time of presentation* | 31 (20%) | 20 (13%) |
| Mean interval from fever onset to study enrollment in days (SD) | 2.6 (2.9) | 2.1 (1.7) |
| Mean number of days of fever after enrollment (SD) | 2.4 (2.5) | 2.6 (3.2) |
| PCR-confirmed influenza | 24 (12%) | 36 (20%) |
| Household compounds | N = 193 | N = 184 |
| Mean number of households in compound (SD) | 2.0 (1.1) | 2.0 (1.0) |
| Mean number of persons living in the compound (SD) | 10.4 (5.2) | 9.7 (5.2) |
| Mean number of persons per sleeping room in index case-patient households (SD) | 3.3 (1.9) | 3.3 (1.4) |
| Assets of index case-patient households | ||
| Electricity | 123 (64%) | 113 (61%) |
| Color television | 48 (25%) | 36 (20%) |
| Mobile phone | 135 (70%) | 129 (70%) |
| Watch | 116 (60%) | 85 (46%) |
| Susceptible household members with syndromic surveillance data | N = 1661 | N = 1498 |
| Mean age in years (SD) | 24.9 (19.2) | 25.7 (19.6) |
| # (%) < 2 years old | 51 (3%) | 49 (3%) |
| # (%) < 5 years old | 175 (11%) | 160 (11%) |
| Male sex | 781 (47%) | 694 (46%) |
| Current smoker | 208 (13%) | 208 (14%) |
| Mean number of minutes spent in cooking area per day (SD) | 52 (73) | 53.0 (70.0) |
| Multiple interactions per day with index case-patient** | 750 (80%) | 681 (77%) |
| Sleeps in the same room as index case-patient*** | 568 (66%) | 513 (71%) |
*Data not collected for 67 children, all of whom were under 5 years old and enrolled in 2009.
**Only queried in 2010; denominators were 934 for intervention arm and 890 for control arm.
***Only reported for members of index case-patient household; denominators were 863 in the intervention arm and 727 in the control group.