Research Article

The Differences of Population Birth Defects in Epidemiology Analysis between the Rural and Urban Areas of Hunan Province in China, 2014–2018

Table 3

The trends of BD prevalence rates grouped by sex and maternal age groups in Liuyang county (rural) and Shifeng district (urban), Hunan Province, China, from 2014 to 2018.

Gender and age groups among areas20142018PC (%)APC (%) value95% CI
BDs ()Prevalence ratesBDs ()Prevalence ratesLimitUp

Liuyang-female237259.7096123.03-111.09-16.880.079-33.634.10
Liuyang-male353348.68240275.32-26.65-4.190.546-21.6217.11
Liuyang-total590306.49336203.39-50.69-8.830.243-25.5811.70
Liuyang-≤24 years109188.221457.33-228.31-18.860.181-44.6618.98
Liuyang-25-29 years254290.48152222.35-30.64-5.210.522-25.1420.02
Liuyang-30-34 years114334.5176151.30-121.09-17.030.037-29.74-2.03
Liuyang-35-39 years36343.1845250.56-36.97-1.800.865-28.2434.38
Liuyang-≥40 years10387.6014330.97-17.11-12.640.311-38.6624.42
Shifeng-female31185.7420135.78-36.79-9.310.044-17.33-0.51
Shifeng-male51282.2423154.99-82.10-17.870.091-36.365.99
Shifeng-total82235.9043145.42-62.22-14.140.039-25.17-1.49
Shifeng-≤24 years12189.27268.49-176.35-29.300.098-55.5512.46
Shifeng-25-29 years45247.3918155.98-58.60-15.820.204-39.9918.10
Shifeng-30-34 years21268.2012113.53-136.24-20.060.002-25.67-14.03
Shifeng-35-39 years3157.079245.2335.959.730.063-0.9521.55
Shifeng-≥40 years1204.082229.8911.23-4.450.737-42.4958.75

aPIs: perinatal infants; BDs: birth defects; APC: annual percentage change; CI: confidence interval; PC: percentage change. Population birth defect prevalence expressed per 10,000 PIs. PC and APC between 2014 and 2018 calculated by population birth defect prevalence rates.