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go - Conversion of time.Duration type microseconds value to milliseconds

I am using go-ping ( https://github.com/sparrc/go-ping )library of golang for unprivileged ICMP ping.

timeout := time.Second*1000
interval := time.Second
count := 5
host := p.ipAddr
pinger, cmdErr := ping.NewPinger(host)

pinger.Count = count
pinger.Interval = interval
pinger.Timeout = timeout
pinger.SetPrivileged(false)
pinger.Run()
stats := pinger.Statistics()

latency = stats.AvgRtt  // stats.AvgRtt is time.Duration type
jitter = stats.StdDevRtt// stats.StdDevRtt is time.Duration type

From running this, I am getting latency in milliseconds and jitter in microseconds. I want same unit for both let's say millisecond so when I am doing jitter = stats.StdDevRtt/1000 or jitter = jitter/1000 (to convert microseconds to milliseconds), what I am getting is jitter in nanoseconds :(. Is there any way to get same unit milliseconds for both latency and jitter.

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