Validity of referral hospitals for the toxicovigilance of acute poisoning in Sri Lanka
L Senarathna, NA Buckley, SF Jayamanna, PJ Kelly, MJ Dibley & AH Dawson
Volume 90, Number 6, June 2012, 436-443A
Table 3. “True” case-fatality rate (CFR) for various poison types and CFRs that would be obtained with three possible hospital admission data sets, Anuradhapura district, Sri Lanka, September 2008 to January 2010
| Poisoning type | “True” totala |
Primary hospitalsb |
Referral hospitalc |
All admissionsd |
|||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| No. admitted | CFR | No. admitted | Deaths | CFR (95% CI) | No. admitted | Deaths | CFRe (95% CI) | No. admitted | Deaths | CFR (95% CI) | |||||||
| Directly | Transferred | In cases admitted directly | In transfers | ||||||||||||||
| Organophosphates and carbamate |
706 |
5.8 |
603 |
6 |
1.0 (0.4–2.2) |
103 |
498 |
6 |
29 |
5.8 (4.1–8.0) |
1204 |
41 |
3.4 (2.5–4.6) |
||||
| Paraquat |
77 |
22.1 |
55 |
0 |
0.0 (0.0–6.5) |
22 |
49 |
8 |
9 |
23.9 (14.6–35.5) |
126 |
17 |
13.5 (8.1–20.7) |
||||
| Other pesticide |
790 |
4.8 |
694 |
4 |
0.6 (0.2–1.5) |
95 |
526 |
0 |
34 |
5.5 (3.8–7.6) |
1315 |
38 |
2.9 (2.1–3.9) |
||||
| Medicine overdose |
789 |
0.6 |
561 |
0 |
0.0 (0.0–0.7) |
228 |
399 |
0 |
5 |
0.8 (0.3–1.9) |
1188 |
5 |
0.4 (0.1–1.0) |
||||
| Oleander |
393 |
4.1 |
299 |
1 |
0.3 (0.01–1.8) |
94 |
269 |
2 |
13 |
4.1 (2.3–6.7) |
662 |
16 |
2.4 (1.4–3.9) |
||||
| Other |
1058 |
5.7 |
899 |
5 |
0.6 (0.2–1.3) |
106 |
546 |
6 |
49 |
7.8 (5.9–10.0) |
1605 |
60 |
3.7 (2.9–4.8) |
||||
| Total | 3813 | 4.6 | 3111 | 16 | 0.5 (0.3–0.8) | 702 | 2287 | 22 | 139 | 5.4 (4.6–6.3) | 6091 | 177 | 2.9 (2.5–3.4) | ||||
CI, confidence interval.
a Sum of all direct acute poisoning admissions to the district’s primary hospitals and its referral hospital (i.e. all admissions minus transfers).
b All admissions to primary hospitals (all are direct admissions, no referrals).
c All admissions (both direct and transfers) to the referral hospital.
d Raw total of all admissions to all hospitals in the district (routine method used for government statistics, which double counts patients transferred to referral hospitals).
e CFR is based on the sum of deaths among transferred patients and patients directly admitted.