Introduction
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to estimate the number of women injured in construction site accidents in Delhi;
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to estimate and compare the annual construction site injury rates per 100,000 workers of males and females;
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to estimate the completeness of ascertainment by FIRs of injured female construction site workers.
Methods
Study design
Definitions
Data sources
Missing records
Record linkage
Matching
Setting
Statistical methods
Estimation of total number of construction injuries in Delhi
Denominators for rates per 100,000 construction workers
Results
Source | Number of workers injured | ||||||||
---|---|---|---|---|---|---|---|---|---|
Fatal | Non-fatal | All injuries | |||||||
Male | Female | Total | Male | Female | Total | Male | Female | Total | |
FIRs (% ascertainment) | 105 (44.5%) | 5 (29%) | 110 (43%) | 244 (30%) | 20 (100%) | 264 (30%) | 349 (34%) | 25 (68%) | 374 (33%) |
ESIC + CWC combined (% ascertainment) | 46 (19.5%) | 2 (11.8%) | 48 (18.6%) | 32 (4%) | 0 (0%) | 32 (3.7%) | 78 (7%) | 2 (5%) | 80 (8%) |
Matched records | 20 | 0 | 20 | 9 | 0 | 9 | 29 | 0 | 29 |
Capture-recapture analysis (Chapman estimator) estimate of total numbers (95% CI) | 236 (188–340) | 17 (7–662) | 258 (204–373) | 807 (536–1522) | 20 (19–1102) | 873 (579–1648) | 1043 (731–1263) | 37 (32–2762) | 1131 (800–1390) |
Male | Female | Rate Ratio (95%CI) | |
---|---|---|---|
Construction workers in 2017 | 711,960 | 44,978 | – |
Fatal | 236 | 17 | – |
Rate per 100,000; 95%CI | 33.15 (29.05 to 37.66) | 37.8 (22.02 to 60.52) | 1.14 (0.70 to 1.87); p = 0.601 |
Non-fatal | 807 | 20 | – |
Rate per 100,000; 95%CI | 113.35 (105.66 to 121.45) | 44.47 (27.16 to 68.67) | 0.39 (0.25 to 0.61); p < 0.001 |
All injuries | 1043 | 37 | – |
Rate per 100,000; 95%CI | 146.5 (137.7 to 155.6) | 82.26 (57.92 to 113.39) | 0.56 (0.40 to 0.78); p = 0.001 |