Description of variables and relationship to disability screening
| Highlighted variables had a univariant significance p<0.1 and were included in initial model | p Value | ||
| Negative disability screen | Positive disability screen | ||
| Maternal | |||
| Median maternal age, years (IQR) | 26.2 (22.7–31.6) n=3905 | 26.4 (22.6–32.1) n=314 | 0.509 |
| Mother cohabited<16 years old | 894/3730 (24%) | 96/304 (32%) | 0.003 |
| Mother illiterate | 2549/3730 (68%) | 213/304 (70%) | 0.533 |
| Underweight (body mass index<18.5) | 424/3694 (11%) | 47/299 (16%) | 0.029 |
| Chronic food insecurity | 2214/3904 (57%) | 174/314 (55%) | 0.655 |
| Antenatal | |||
| Any antenatal care | 1733/3905 (44%) | 144/314 (46%) | 0.611 |
| Four skilled antenatal care visits | 363/3902 (9%) | 20/314 (6%) | 0.082 |
| Symptoms of preeclampsia | 2015/3775 (53%) | 181/308 (59%) | 0.068 |
| Presumed eclampsia | 732/3903 (19%) | 68/314 (22%) | 0.207 |
| Labour and delivery | |||
| Delivered in healthcare facility | 162/3905 (4%) | 8/314 (3%) | 0.165 |
| Skilled birth attendant | 106/3747 (3%) | 3/304 (1%) | 0.056 |
| Prolonged labour (>20 hours) | 1124/3905 (29%) | 99/314 (32%) | 0.302 |
| Presenting part not head | 18/3875 (<1%) | 1/312 (<1%) | 0.716 |
| Any assisted delivery | 59/3905 (2%) | 6/314 (2%) | 0.580 |
| Multiple birth | 54/3905 (1%) | 4/314 (1%) | 0.873 |
| Any risk of infection | 1890/3408 (55%) | 164/273 (60%) | 0.140 |
| Antepartum haemorrhage | 526/3903 (13%) | 38/314 (12%) | 0.491 |
| Clean delivery kit used | 457/3905 (12%) | 32/314 (10%) | 0.421 |
| Attendant washed hands | 1925/2669 (72%) | 150/221 (68%) | 0.177 |
| Meconium | 615/2315 (27%) | 53/195 (27%) | 0.852 |
| Neonatal | |||
| Preterm (<36 weeks) | 40/3905 (1%) | 4/314 (1%) | 0.675 |
| Male gender | 2000/3905 (51%) | 171/314 (54%) | 0.269 |
| Size ‘very small’ | 102/3905 (3%) | 18/314 (6%) | <0.001 |
| Delivery room heated | 3071/3905 (79%) | 261/314 (83%) | 0.061 |
| Mean weight in grams at 1 month (SD) | 4299 (902) n=3389 | 4066 (906) n=264 | 0.001 |
| First bath<6 hours old | 568/3901 (15%) | 42/314 (13%) | 0.566 |
| Substance applied to cord | 741/3820 (19%) | 70/308 (23%) | 0.147 |
| Sterile blade cut cord | 1608/3869 (42%) | 137/313 (44%) | 0.446 |
| Discarded colostrum | 1346/3898 (35%) | 118/314 (38%) | 0.257 |
| Breast feeding started<1 hour old | 2341/3898 (60%) | 175/314 (56%) | 0.133 |
| Any supplemental feeds | 220/3898 (6%) | 22/314 (7%) | 0.318 |
| Any illness | 1388/3905 (36%) | 130/314 (41%) | 0.037 |
| Respiratory distress | 421/3905 (11%) | 38/314 (12%) | 0.470 |
| Diarrhoea and persistent vomiting | 172/3905 (4%) | 33/314 (11%) | <0.001 |
| Fever | 586/3905 (15%) | 59/314 (19%) | 0.073 |
| Potential confounders | |||
| Allocation to intervention in original trial | 1969/3905 (50%) | 133/314 (42%) | 0.006 |
| Household appliance score: none of assets on list | 2071/3904 (50%) | 158/314 (53%) | 0.351 |
| Household appliance score: most expensive assets | 230/3904 (6%) | 15/314 (5%) | 0.417 |